Holding beliefs and opinion can never be treason. Treason in the USA can only be charged against those who actively wage war against us, or give tangible aid and comfort to a declared enemy.
Melas, it is going on in many Mosques all over the USA. Aid, comfort, money...going to the Theocracy. Perhaps my area is just a hot bed for these kind of groups, but I wouldn't trust any of them...ever.
As far as that muslim school, I feel sorry for those children. The Ihsan School of Excellence has been found to be nothing more than a cover for supporting the coming invasion.