We left the school compound only after the watchman gave us the all clear.
This paragraph is very clear to me after you revised it.-- Come on, Gary - if you are serious about your English, then spell 'you' properly.
If I want to take any days off from school, I should clear it with my principal first.
The weather has cleared up now, so I think we can continue our match.
What happened to 'please', Gary?