I once lived in an apartment building where there was no cell coverage unless you climbed onto the roof. I bought a little cell repeater, put up an antenna, and

I once lived in an apartment building where there was no cell coverage unless you climbed onto the roof. I bought a little cell repeater, put up an antenna, and restored great service. Not just to myself but to everyone within a couple hundred feet of me. The entire setup cost me around $200. I wasn't examining the cell connections, but I could have. They've changed the laws since then to require you to get the cell provider's permission before doing that -- but presumably that would be a very easy thing for a school to get.