Top of the Classroom

Every secondary teacher has come back from a sick day to the same scene: a stack of blank worksheets, a note that says the class "was a little loud," and a lesson that now has to be taught twice. The problem usually is not the substitute. It is the plan. Teenagers are very good at spotting a day that does not count. If the sub plan looks like filler, they will treat it like filler. A good plan does the opposite. It tells students, before the substitute even speaks, that today is a normal day with normal expectations. Why the sub day is worth taking seriously It is easy to write off one day. But days add up. A well-known study by Raegen Miller, Richard Murnane, and John Willett followed fourth graders in a large urban district over three school years and found that each 10 days of teacher absence reduced students' math achievement by 3.3 percent of a standard deviation. That is an elementary sample, so it does not transfer neatly to a high school biology class. It do...

Watch a secondary classroom for one period and count the switches: warm-up to notes, notes to partner work, partner work to materials, materials to cleanup, cleanup to the bell. Each one takes a minute or two. Some take five. Across a week, those minutes add up to real instruction time, and they are also where most of the off-task behavior starts. Transitions are rarely what anyone thinks of as "teaching." They are, though. A class that moves between activities smoothly has been taught how to do it. Why transitions go sideways with teenagers It is usually not defiance. It is uncertainty. When students do not know exactly what happens next, where the materials are, or how long they have, they fill the gap with conversation and phones. Older students also do not like being herded. A transition that feels babyish, such as a clapping pattern built for younger kids, can get more eye-rolls than compliance. The fix is to make transitions predictable and to treat students as ...