That is the most rediculous thing I ever heard. Our school system has been honored with 3 national hispanic scholars in the last 5 years. The district has amazing educational and community involvement.
Most parents don't have the time let alone the discipline to teach their children at home. I know, because I tried it with my youngest, she had special needs and I felt she needed a little more time at home to mature to the level of the other kids and it was very, very difficult to do. In the long run...the children suffer, it's too easy for parents to say, ok. you can watch so and so for a bit and then we'll work on english.
While I sympathize with the fact that yes there are many schools out there that are not up to par with the standards or security for children to learn, on the whole most are.