My idea is to produce special copy-books for students.

On these copy-books I offer to print the main school sins like talking in the lessons, cheating, non-attendance of lessons, unreadiness for lessons and etc.

I also offer to print about punishment for these sins. E.g., give a ring to parents and invite them to school, make a student leave a classroom, make a notice in a pupil's mark book, and etc.

I bet it will help to improve school discipline. Students have to know what is forbidden them and how they will be punish.