I forgot to include the following sentences. Thank you very much.

1.After each written test the class representatives are required to count the tests. put them in alphabetical order and give them back to me.
2.Before handing the tests back to you, I’ll register the marks (?) in your school report.
3.Was anyone failed last school year?
4.If you have low marks in more than two subjects, you’ll have to repeat the year (Can you say: you’ll be failed?) If you forget to bring your holiday homework, I’ll write a reprimand (?) in the class register???
5.Can you go and get some chalk? Can you wipe off the blackboard?
6.I spent my holidays (holiday) texting my friends/e-mailing my friends/doing a lot of sport, sunbathing/playing on my Nintendo ds. I worked as a volunteer at (or “on”) a summer camp. I was asked to look after children aged between 5 and 12.
7.When I was at the seaside, I sunbathed a lot while listening to music on earphones.
8.Before bathing (going for a swim) I wore my underwater mask (or goggles?) and ear plugs.
9. In order to get a pass, two third of your test must be correct. (?)

1. commas after "tests" and "order"

3. Did anyone fail ...

4. The only person doing any failing is the student who has the low marks.

6. Too many choices. What do you really want to say?

8. "I put on..." (not I wore)

9. two-thirds