Don't make statement like the above until you think them through because I know of cases where schools turned kids into monsters because those schools were turned into 'Zero Tolerance' prisons.
Where were the parents while this was going on? Sorry. No matter how strict the school is, the parents and the kid are primarily responsible for "turning kids into monsters."
Kids are in school less than 7 hours a day, just 190 days a year. And they don't get there until they are 5 or 6 years old. Put the "blame" where it belongs.