As a substitute, how can I make the return of the real teacher a better experience?

1 – Is it better to leave discipline issues to be dealt with by the real teacher? Or should I take care of everything myself and let the teacher know what happened? Obviously if a kid is threatening others they need to just go to the office, but what about the ones who won’t stop talking when they’re supposed to? If the school has a school wide discipline procedure should I handle things myself?

2 – What kind of things are important to leave in the note for the teacher? Do you want to know who behaved well or just those that didn’t behave? Do you want to see random observations I had about the class?

3 – What’s more important: getting through everything in the sub plans for that day or getting things done well even if it means not getting something done?

4 – By default, should work done in class be taken up or left with the students? Should they be allowed to work together or should they have to work by themselves?

Of course, general advice will be great too.