Seeing the primary responsibility for their education as being in the hands of others. Isolation from the Real World Segregation by chronological age. Separation from family. Isolation from the working world. Isolation from the effects of age and disease.
Subject matter is divorced from context.
Schedule Rigidity Having to be in school at certain times means you can't see the World Cup or a solar eclipse if it happens during the school day, and you can't see the late show or a lunar eclipse if you have to get up in the morning. Having to be in school limits your ability to travel. Having to be in school limits your ability to do any time-consuming worthwhile activity. They are unrelated to questions of crime, drugs, threat of violence, time spent in forced commuting, illiterate teachers, etc. Moreover, many educational reform proposals act to make these problems worse.