Ask for the board, or the principal of the school to meet with the public about this matter. Not a regularly scheduled meeting but a meeting just on this topic. Invite your police chief or sheriff to come and talk about the number of arrests, what the arrests were for, and how much it cost them to supervise these kids.
They cannot refuse to meet with the public, especially if parents are in the group. The police and sheriff CAD reports are public record, some arrest reports may be redacted, but CITIZENS of the United States have a right to this information.
You may be shocked at the true behavior of some of the students, if you get the sheriff or police to come and talk to your group.
The minute you put the administration on the hot seat, the heads of the enablers will roll. Do it. It works.
The police had better start arresting the enablers/revolutionaries. They have to know that when tshtf, they're the number one target of the anarchists.