Step 2 line up. You can't ask your classmates to be disciplined, so it's inevitable that they are in a mess. Let's say "everyone stands in his own position" first-because the PE teacher usually arranges the whole class in a fixed formation in the first class. Then the axe: look right, look forward, be at ease, stand at attention.
3. roll call. You know that.
4. Warm-up exercise: raise your right hand with a fist and put it in front of the middle classmate: "Take this classmate as the benchmark and disperse in gymnastics formation". After that, the same person does the same action: "Take this classmate as the benchmark and move closer to the middle". Then the teacher lectures and takes over.
5. Team up after class. Gather in line in front of the same class.
In fact, the Sports Commission has many opportunities to contact all the students, so you should pay attention to your appearance in front of the queue. The sports commission is yelling, don't be too gentle. I guess you are a boy. If so, you can't live without the crowd. You should have a few good friends, otherwise people in the group won't praise you. Cherish this opportunity and be our eternal sports commission. Come on!