Allowing prayer in schools is bad and schools should have their books returned, I'm actually fine with the attendance provision, but these two need to go.
The text says that the prayers have to be not disturbing the class. If they're not disturbing anyone, what's the issue?
To be fair don't think praying in class could ever end up as "not disturbing the class". It's still speaking (even if it's in a very quiet voice) and in some cases standing up or going on your knees or other things that would be very distracting to the teacher and other students.
I'd just cut it to the "during a time of recess" part personally.