If you look at countries that have large private and comprehensive education systems (and which aren't well-segregated like the US), it is very obvious that you

If you look at countries that have large private and comprehensive education systems (and which aren't well-segregated like the US), it is very obvious that you are permanently ruining the lives of hundreds of thousands of kids every year. Whether you learn something from it or not, the purpose of school is to learn. If you went into work every day and had someone beating you up every day, would you be productive? Probably not (and btw, the only reason we have systems where this happens at all is because of what adults want, not what kids want).