The extracurricular activities that students get involved in can be related to governance. These are important and meaningful activities. They help the ethos and the general decision-making. They also give students real responsibility, which is related to resilience. This all contributes to a student's sense of self.
Schools can do so much to increase a student's self-concept.
Success at meaningful tasks should be rewarded. It also helps if specific feedback is given that delineates just how the student's abilities and characteristics contributed to the success. Discipline is very important. The order and discipline that the students receive at school help them to learn to live in society. However, discipline practices should be applied evenly.