If I were you I'd look into the law where you are and see what your national communications authority would think about jamming the airwaves, school approved or not.
Edit... this post was in response to a post by the OP which has since disappeared
If I were you I'd look into the law where you are and see what your national communications authority would think about jamming the airwaves, school approved or not.
Edit... this post was in response to a post by the OP which has since disappeared