Well, schools can’t actually compell students to attend (see the growth of Homeschooling) however I believe that education itself is compulsory, and I don’t think it’s a free speech issue.
Also, grades aren’t a free speech issue either. This is something I’m pretty familiar with, I teach US History to grade 7’s.
Thank you for your input.
As long as kids are in a school program, I believe you are right about compelling them to attend public schools.
If they aren’t in a program, I believe they are required by law to attend to a certain age.
Perhaps that is no longer the law of the land. I’d like to think kids would have to be involved by law, in an education program until 16.