In order to control students behavoiur, I use this program that helps motivate students to achieve positive points. It is called Class Dojo.
When a studetns wants to go to the toilet, they must ask the teacher " May/Can I go to the toilet/bathroom, please? Then, they must the toilet class sign to BUSY and return it to green FREE when they come back.
For controlling second grade discipline, I made this behaviour chart. Each student has a personalised peg.
At the beginning of each day, each student places their peg in the "READY TO LEARN" section. Depending on their behaviour, involvement,... their peg goes up or down.