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Making the Most of a 90-Minute Block


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This is an excerpt from a letter written to a Charlotte, North Carolina newspaper in 2002 by a first-year math teacher, a man who was vehemently opposed to block scheduling.

“I am…a first year high school math teacher. (My school) operates on a block schedule — a concept I had never even heard of until I accepted (this) teaching position. My observations of block scheduling have been a shocking education for me. Block scheduling has resulted in less emphasis on core content and more on gimmickry. Classes used to be places where serious learning took place. No more. Under block scheduling, they have become little more than glorified playtime periods. Classes used to consist of core subject material being communicated to students by individuals rich in knowledge and experience. Now teachers are no longer teachers, but merely guides — glorified baby-sitters, if you will. Under block scheduling, the students are now in groups trying to “discover” facts that used to be communicated instantly when teachers actually taught. It’s obvious that this format wastes valuable class time — and that doesn’t include the time students waste by talking, singing, and becoming restless all-around as a result of the lengthened class periods.”

This letter articulates the concerns some teachers, parents, and even students have about block scheduling, where class periods last 80 to 100 minutes and only four classes are held each day. This type of schedule became popular in middle and high schools in the 1990s as an alternative to the traditional schedule, where students attend the same six to eight classes, 45 to 50 minutes each, every day. The idea behind the change was that with less transition time between classes, fewer instructional minutes would be wasted, and the kinds of behavior issues and bullying that can crop up during class transitions would also be cut down. On top of that, having extended blocks of time would give teachers the opportunity to dive more deeply into their content.

And in many cases, schools have been successful with block scheduling. They’ve even found solutions for some of the problems it presents, like offering shorter periods for classes like math and band, where consistent daily practice is more important. But one issue with block scheduling seems to persist, a problem that is highlighted in the letter above, a problem that is still voiced by teachers and students today: The ineffective use of the longer block of instructional time.

So that’s what we’re going to focus on here. We’ll start by looking at the mindset that causes a lot of block scheduling’s biggest problems. Then we’ll quickly review some best practices for teaching in the block. Finally, I’ll walk you through five specific structures you can choose from to plan solid, interesting instruction for an extended class period, the kind of teaching that will make those 90 minutes fly by.

The Big Problem: A Lecture-as-Teaching Mindset

Some of the challenges associated with block scheduling boil down to logistics, like needing more time for AP courses. These issues can often be solved with creative scheduling tweaks.

But the rest of it, the criticisms lobbed at block scheduling and the problems that can crop up with it, can almost all be traced back to one mindset, a single strong, pervasive belief about teaching, and that mindset is this:

teaching = lecture

This mindset, the belief that lecture is the only “real” way to teach, causes all kinds of trouble in block scheduling.

Let’s go back to the math teacher who described the extended classes in block scheduling as “glorified play periods” in his letter. One likely reason he felt that way was because he saw his co-workers doing something besides straight-up lecturing. Here’s a line from his letter again, where he longs for the good old days of traditional scheduling: “Classes used to consist of core subject material being communicated to students by individuals rich in knowledge and experience.” What could he possibly mean besides lecture?

In this teacher’s mind, anything that wasn’t lecture couldn’t possibly be “serious learning,” and therefore all the other non-lecture-based activities he observed in his colleagues’ classrooms were a waste of time.

And to an extent, he may have a point. We don’t know what was going on in his colleagues’ classrooms. Maybe the other teachers were using some highly effective techniques that he was just unfamiliar with. Or maybe, if his school was like some who don’t invest enough in training teachers in different methodologies, they really were just screwing around. Because if teachers don’t have a well-rounded repertoire of instructional strategies, methods that they know are effective, they will only use lecture to teach, and that gives them one of two choices:

  1. Lecture for the full 90 minutes, which bores students to tears, can lead to behavior problems, and ultimately has a negative return, since student attention spans can’t be sustained for longer than about 15 minutes. So in this case, you’re “covering” a lot of material, but students aren’t learning it.
  2. Lecture for half the period, then give students the second half for “homework time.” This is also ineffective, because that means students are actually learning only half the material over the course of a semester or year. This is typically the reason why some teachers object to block scheduling: They say they can’t “get through” as much material. But if these teachers knew more strategies, that remaining time could be used for instruction that would actually hit more learning targets.

Best Practices on the Block

Do not rely solely on lecture.
This advice comes from every teacher I have talked to and every piece of research I have read about successful block teaching (for a good summary, see Queen, 2002). Although I do believe a brief, dynamic lecture every now and then is an efficient way to deliver instruction, and does not need to be abandoned entirely, teachers who lean too heavily on it are doomed to failure in a longer class period. Instead, use a variety of instructional strategies, many of which we will get to in a little while.

Switch activities every 15 to 20 minutes.
Students get restless when they are required to sit still or do the same thing for long periods of time, so unless they are working on a task that will truly engage them for a full hour (and we’ll get to these later on), look at your class period as a series of 15- to 20-minute chunks of time and switch activities in each chunk.

If you’ve ever finished your planned activities in a 50-minute period and found yourself with ten awkward minutes to kill, imagine how much worse it is when you have 30. So plan for the essential activities, but also build in some extras that would be nice to get to, but aren’t essential. Meagan Brockway, a high school history teacher in Greencastle, PA, says, “Block scheduling requires planning for more than you can accomplish and then continually readjusting based on student needs.” This readjustment may vary from student to student and class to class. “If I have a class that is tremendously behind, then it is a matter of looking at the ‘extras’ and either cutting those out completely to get to the content needed OR if it is a class that is up for a challenge, then I give them extended time to complete it on their own.”

Use a smart pacing guide.
One of the challenges of block scheduling is “fitting in” all of the content you might be used to teaching on a daily schedule. Pacing guides, which are used to map out when you will address each learning target or standard throughout the year or semester, are essential to make sure you use class time wisely. But these often value “coverage” over actual learning. The late educator Grant Wiggins, who always offered incredibly insightful ideas on authentic learning, wrote a great post on designing pacing guides that help teachers hit the most essential standards but also build in time for re-teaching and extension when necessary.

5 Structures for a Block Class Period

To make the most of your extended class period, consider one of these five structures, which you can mix and match over the course of a marking period, depending on your instructional needs. For the sake of convenience, I’m going to assume we’re talking about a 90-minute class period, but you should obviously make slight adjustments if your block is longer or shorter than that.

The Classic

This would look the most like a typical lesson, except you would have time to do it right and include ALL the bells and whistles that we all know a good lesson should have:

Whitney Schultz, who teaches 80-minute blocks of English at a high school in Baltimore, MD, uses this kind of structure on most days, mixing up the activities within each of the segments. “That 10-15 minute review and 10-15 minute introduction might instead be a 20-30 minute quiz followed by self-grading; or, in my AP class, it might be 20-30 minutes of daily AP practice followed by 40-50 minutes of text discussion/analysis. I’ve found it’s easier to fill 80 minutes than try to trim down what I cover each day!”

The Workshop

In this structure, students would spend the majority of time working on their own projects. The class period might start with a brief (10-minute) mini-lesson, and it would ideally end with some kind of a wrap-up, sharing, or reflection time, but at least a full hour would be spent working independently or in groups on a long-term, hands-on project. Meanwhile, the teacher would circulate, conferencing individually with students as needed or using an appointment system like the one used at the Apollo School.

The Lab

One big, focused activity takes up most of the class period in this structure. Class may start with some kind of an introduction and end with a reflection or wrap-up, but at least an hour is set aside for an activity where the whole class digs into a single meaty task. In this case, the task itself is designed to be active and engaging, so the rule about switching every 15 or 20 minutes is waived. The big activity could be any of the following:

The Performance

At the end of a learning cycle, students should ideally have some kind of final product to share with peers, or even outside visitors. A 90-minute block class would be ideal for sharing and celebrating this student work. This performance could take many forms:

The Variety Pack

On some days, you might opt to just give students a fast-paced mixture of activities, some that might review previously learned content, some that introduce new stuff, others that do a bit of drill and practice, and even some that are just there for fun and enrichment. These can be handled in a station rotation model, with student-selected learning centers, or just by having the whole class do a a series of smaller activities together. Here are just a few possible activities you could include:

So whether you’re brand-new to block scheduling or you’ve already been doing it for years, I hope you’ve found at least one new idea to help you make the most of that extended class period and never again be accused of running a “glorified playtime period.” ♦


Queen, J.A. (2002). Block scheduling revisited. Phi Delta Kappan, 82(3), 214-222.

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  1. Christopher Miller says:

    Thank you for pointing out the falacies in the letter. First-year teacher (who should have been prepared better) thinking lecture (the way he was taught) delivering content is the only way to teach. Thank you again for showing us that there is a difference between teaching and learning as well. Being subjected to the “expert” reading a PowerPoint for 40 or 80 minutes (or 5 hours during traditional teacher PD workshops) is the worst way to learn. Being curious (whether naturally or induced by another) and then struggling to discover what’s going on (as opposed to the “answer”) is the best way to learn (and that’s how babies and toddlers and young children learn until school rips that curiosity out of them).

    Unfortunately, too many teachers (as well as too many administrators, parents, and students!) can’t think outside the box of lecture and drill and kill.

  2. Emily says:

    I’m having the opposite problem – I previously taught middle school ELA in block periods, which I loved, but now I’m moving to the high school and I only have 42 minutes! Any advice for conducting meaningful, engaging lessons in such a short period of time?

    • Sarah says:

      Yes! Stop thinking of lessons as 42 minutes long :). Just because you have 42 minutes a day doesn’t mean it’s the end of the learning process for that specific content.

      You have to shift your mindset from content being served once daily to content being a continuous learning and discovery process. Even when I taught in a school with no block periods, my kids still did project-based learning and inquiry every day.

      I’m sure I’m preaching to the choir…but learning doesn’t end with the bell 🙂

    • You can try flip learning Have the kids do some prep the night before
      Also online testing gives back the class time taken by testing in class and gives the kids feedback faster

  3. Hello Jennifer!

    I taught on the block schedule from 1997 until I retired in 2010 and I loved it! Your article was spot on! Thanks for sharing with a new generation of teachers!

  4. Loved it! Another fallacy in the reasoning of the critic of block scheduling is that the purpose of education is to instill content in the quickest way possible. That may have been true back in the day, but the accessibility of the internet has made that somewhat obsolete. Today the purpose of education is to teach students to how to learn.

  5. Rose Hendricks says:

    I have been looking for a steady source of professional inspiration for a while, and have found it here. Every episode invites me to reevaluate my teaching practice or try a new approach with an eye towards enhanced student learning and engagement. I have contemplated taking a personal day so that I can listen to old episodes and plot and plan the implementation of all the strategies I’m learning about. “The Cult of Pedagogy” has become my most valuable source of professional development.

  6. sue says:

    I wish this information would come from our administrators who have recently told us we are going to 82 minute block in September. They have not done their homework…

  7. My school is currently trying to decide if we want a block schedule or traditional schedule next year. Many teachers want block schedule, but several subjects are concerned about not getting face-to-face time with kids daily for that repetition/daily practice (mainly math, foreign language, and music). Is there research either way on the benefits of seeing students every day in those subject areas?

  8. Melody Lane says:

    I have been teaching HS math for three years and have been very successful at teaching on traditional schedule. This year, I relocated and will be teaching 7th grade math on 90 minute block. I have no idea where to start.

    • Daria Sturgis says:

      How is block going for you? I am stepping in to a 7th/8th grade position with 82 minute classes in a couple weeks. I have successfully taught high school with 52 minute classes. I am feeling overwhelmed. What’s working for you?

  9. Carolyn Powell says:

    Where to start? Start where any great lesson begins. Identify clearly and specifically what students will know or do as the direct result of the learning opportunity.
    Then analyze what they will need to get there and design carefully sequenced activities, questions, procedures, materials, games, practice, etc. that you and the students will need. SMALL STEPS.
    Try to predict what could go wrong or where confusion might occur and plan ways to avoid or use these moments as opportunities for growth and deeper thought.
    Create “The Need to Know” and set the ball in motion.
    Have fun learning with your students.

    • Joaquim Luísa Pereira Vaz says:

      What can I say or how will I start saying it? I 💕 the way you explained the matter of block lessons.

      I really appreciate it. I’m used to this type of lessons and I confess that never thought I’d find someone to explain me how to effectively use the 90′.

      It’s amazing, I enjoyed your explanation.

  10. Noreen says:

    I only have 72-minute classes, but they can sometime feel like they’re dragging towards the end. I conducted a lab-style block class in ELA recently and I think it was fairly successful, with plenty of movement and valuable activities.
    1) Intro: Free-write & sharing: What makes a class discussion work well? (10 min)
    2) Prepare for discussion: In small groups, pick a side of the debate proposition regarding the text. Together, find and discuss 3-5 pieces of textual evidence that help support that side. (20 min)
    3) Activity: Participate in forum discussion incorporating evidence with every comment (25 min)
    4) Reflective writing & sharing: What was the benefit of using textual evidence? What words did you use to introduce the evidence? What speaking “moves” did you make to make your use of evidence effective? (15 min)

  11. megan says:

    I don’t think the original letter ranting against block scheduling is saying that she thinks teaching should be all lecture. She is stating that in order to fill 90 minutes – and keep the kids from losing interest – there has to be a lot of fluff in the lessons. As one who teaches 95 minute periods each day, I tend to agree. Card sorts, four-corners, scavenger hunts, etc. Educators talk them up like they are great – but I agree with her – they are essentially time fillers – they take 15 minutes to do something you could otherwise cover in 5 with the same impact on learning.

  12. Minda says:

    As a student I loved block schedule in high school. It was so much less rushed and stressful than the traditional schedule I had in middle school (the middle school actually adopted block schedules the year after I started high school). I only had three classes where I felt the time was not used effectively and it was great not having to break my back lugging home homework from every class at once. I don’t know how you’d ever do science lab s with shorter class periods. Even in band and math, subjects you mentioned as possible exceptions it was better. In middle school we handed in our homework and listened to the texture and then the bell rang. I’m high school we had time for questions and practice problems. It really helped prevent the whole getting home and realizing I had no idea how to do the homework issue.

  13. Alison Hussar says:

    I have loved teaching my ELA blocks, but now I’m faced with TWO HOUR blocks online and I have NO IDEA how that’s supposed to look/work. Thoughts?

  14. Chris Bath says:

    Excellent podcast!
    I just finished an AQ course on online teaching during which we listened to a few of your ‘casts. Great stuff.
    I work at a school that already ran on a compressed calendar, with 90-minute periods.
    As we’re shifting to all-online in a few weeks with the quadmester (two classes per day), my first quad will be grade 10 science and grade 12 chemistry… classes will be 3 hours each.

    I like the idea of breaking up the learning into transitional bites, but I’m going to be winging a bit as I go to see what that looks like for students I won’t see…

    Power forward.

    Thanks again!


  15. Over-planning is most likely what most great teachers are “guilty”‘ of.

  16. Mike Marshall says:

    Great Podcast. Thank you. We are using Block scheduling for the first time in my district teaching online. We have gone through extensive and useful training.
    One thing that I barely ever have experienced through ALL of the training, podcasts, workshops, etc. is that all of the training and examples, info, websites, etc is geared towards all school subjects such as math, English, social studies, etc EXCEPT for foreign languages. I think we should pay more attention to world languages in this country! Thank you for everything you do.

  17. Nick says:

    If you’re using Zoom, certainly utilize breakout rooms, and you could also check out a few tools like Parlay for discussions or elink for curation projects. Students could also create blogs or one-pagers, too, during this time.

  18. Krista says:

    I’m currently getting ready to teach blocks in 9-11 ELA and in geometry. We have a short day and teachers are allowed to be creative with the curriculum- I was a little- ok a lot intimidated by this but after reading the article I feel more secure and less stressed. Btw I was hired two days before school starts and am teaching both online and in the classroom. Thanks again

  19. Brian says:

    I am using Google Meets and Canvas this year, teaching 4 different courses. I am looking forward to seeing how we can better instruct our students virtually using all of the tools available online. Thank you for all of these ideas and resources.

  20. Jim Parrish says:

    The focus must be on content being a continuous learning experience. There is also the discussion and discovery process. Instead of project based learning, physical education is more interactive.

  21. Scott says:

    Great podcast – my district is going to block scheduling for the first time. I plan on overplanning and moving on from an activity every 20 minutes or so. It should be interesting!

  22. I always appreciate your thinking! I work with teachers to improve practice and I am currently coaching a new high school teacher who is struggling with how to structure an 80-minute block. I shared your article and it made a lot of difference. THANK YOU for the concrete examples!

  23. Mariella Warren says:

    Hi Jennifer!
    I enjoyed very much your podcast. I currently teach 3 different ESL courses and pretty much use the classic organization in all my classes simply because all my students are “newcomers” and are learning the fundamentals of the English language. However, I think I will put into practice a “variety pack” structure to change the pace a little bit and make it more interesting for my students. Thank you for your input! Mariella Warren

    • Margaret Harris-Shoates says:

      Mariella, I am so glad that the post was helpful in pushing your thinking about the organization of your classes! Thank you for sharing. I will be sure to pass on your comments to Jenn.

  24. Cindy byrne says:

    Some of these I have used before, and there are some that are new to me and will give them a try.

  25. Jeff McCullough says:

    We are looking at keeping the block and this information was so helpful!

  26. Gregory Keehn says:

    Blocks are good for projects and collaborating.

  27. Dave says:

    Most adults can’t pay attention to anything for more than 20 minutes. Why do educators think adolescents and juveniles can sit still and be on task with whatever style of lessons you prepare for 90? Blocks are great for SOME well adjusted students who can stay on task and do not need constant behavior management. What is that – 20-25 % tops? I teach blocks in HS and it stinks. It is too long for the kids. They check out. Even when you mix it up – it becomes an avalanche where you basically are forcing a whole week of content in 2 days. Much prefer shorter lessons that are engaging – daily. For advanced kids – projects, labs – sure – blocks can work. Everything else – the second half of the block becomes herding cats. And it is NOT the lessons or the teacher – it is the TIME. It doesn’t matter if you over plan if the kids are checked out. And they are.

    • Hey Dave,

      Scheduling a 90 minute block does have its challenges. The post does share a variety of ways teachers can switch things up with purpose every 15-20 minutes, but still, teachers know their kids best and what works well for some kids, may need to be adjusted for others.

  28. Amanda says:

    I have a block schedule which is 1 hour 50 minutes, but 5 days a week with the same classes each day. It’s exhausting. Though it does make Fridays shorter schedule where I have 1 hour and 5 min fly by I guess. It’s just hard when kids finish at different paces and it’s exacerbated over an almost 2 hour period. I feel bad when I pull out another activity. But try to go between a short instruction then work time and back and forth. I wish I could get some independent reading in class but so far have failed.

    • Andrea Castellano says:

      Amanda, I agree it can be challenging to create learning tasks for longer blocks, especially when students have different needs. On the other hand, as evidenced by the number of suggestions included in the post, it offers many opportunities to switch things up: you can allot time for review or extra practice, group work, independent study, or projects.

      If you haven’t tried it yet, I’d recommend looking at one of the five structures outlined in the post, possibly starting with the classic one, which has time for every part of a traditional lesson plus a built-in assessment piece and reflection time. Teacher Whitney Shultz even explains how to modify it from day to day. Since you have a shorter period on Friday, you could skip one or more of the components but still have time for authentic learning and assessment.

      I’d also suggest reading through the comments from other teachers at the end of the post- you might pick up some insights or ideas there! And if you’re still on the fence about how to best use your time, I’d suggest a backwards-design planning approach where you identify the priority tasks and enrichment/supplement tasks and build your block around that. Incorporate feedback from your students about what’s working for them, too. Hopefully in time you’ll find the right mix of activities for the time you have.

  29. Nicholas L says:

    The problem with block scheduling is you have to pay more taxes.

    • Jordan H. says:

      I agree with that statement. A good anticipatory set is actually discussing how a Bengal cat can interact with your golden retriever.

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