I haven't had this very clearly explained and I'd love to have it translated in detail, but here's my take anyway:
The law bans teachers from touching students, from regulating hair length, and from banning phones schoolwide.
Now, I'm not sure, but I think the law leaves much to the interpretation of the schools, or at least that's what's happening. Some schools/teachers are taking this to mean push ups, raising the hands, what have you are included in the ban. They also seem to think it means we're not allowed to take away their phones at all.
I really really really wish that before dropping this bomb on the nation's education system they had properly notified and trained all the teachers or at least department heads and principals in the ins and outs of the new law.
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