Bad behavior in public schools exist because of the loss of morality in the home. When no teaching of what is right is done and enforced by parents; the children will do their own thing. This may mean they will learn from the wrong kind of people and when that happens it will not be strange to see a student bring a weapon to school. 1 Cor 15:33. 1 Cor 5:6.
In public schools that are bad, there are many frighten teachers, incompetent teachers and thank God, great teachers! Outside, many stressed parents continue to work two and three jobs in to pay for private school and some parents are up to no good.
But morality must be taught at home and carried by students into the public school system.
On the other hand, the government must see that schools get the funding and materials that are needed to do the job of educating these young minds of tomorrow.
Man cannot achieve this goal without God, so let us not forget His word as we look into this matter Isa 1:4-20. Pro 11:11. Pro 14:34. Jonah 3:4-10. 1 Sam 12:24-25.
Deut 28: 1-68. Eccl 12:13-14.