Teacher here. I can explain this as: at any given time only about 1/2 the class is listening to instructions. I’m guessing that 4th period is a smaller class, but they did well because the teacher could better monitor what they were doing. I’d be willing to bet that 7th period is the largest class.
Early periods, kids are tired. Late periods, kids are distracted because freedom is near.
Early periods, kids are tired.
Maybe going to school at nine instead of 8 o clock would help, since most people are of owl (late) chronotype. Studies have shown, marks improve. There’s neurological and genetical proof in science. But can’t have that, since work and the world is run by the early birds.
Plot twist! 4th period only has one student.
Might also be the teacher wondering why there are so many injuries and doing the experiment himself.
