你光看到他们退学了，但你不知道退学后发生的事。

"Any parent, guardian or other person having custody or control of a child between the ages of seven (7) and the compulsory attendance age for the district, must ensure that the child is enrolled in and regularly attends public, private, parochial school, home school or a combination of schools for the full term of the school year."
就是说，孩子必须读书。就算退学了，你也得再找个学校，或者homeschooling（必须符合学区要求）。