well, education they say it's the bedrock of any nation and it's also said that if you think education is expensive then try ignorance, however base on this context of the op I'll say if op think education is worthless then he should try ignorance. If we all stop our children from going to school be it the public or private schools we are invariably recreating a dark age generation in the future. That some kids got addicted to watching porns while in school doesn't actually mean they learnt that from the school environment, it could be a character trait gotten from the home out of parental failure in their own role.

It's important to note this that informal education which is what we get from home's as kids shapes a lot about how children would chose to behave when they get into the formal education environment. The importance of school can't be overemphasized. Like look around you and try to contrast and compare the character of people that passed through the four walls of university and college to those that never did. When way of thinking, talking and development is obviously different. I think op has a personal vendetta with school and education and he's yet to be explicit about.