Instead, label them BOX 1, BOX 2 and BOX 4 and put "geo-location circuity" (it doesn't have to work, just make it look like it could) in it and place those at various points in the school, preferably with visible wires.
Then you can claim that you were trying to build your own local mini-gps to monitor your movements throughout the day.
Same popcorn value, less time in prison.
You shouldn't be caught sitting in your comfy chair eating popcorn though...
Like other rational people who live or have lived in USA, I have minimized my interaction with both "sides" to the extent that I've been able. (Although frankly I elicited more sympathy for a stolen bike from an admitted bike thief than I did from any cop.) If you drop another "you just don't know how it is to be a cop" whinge on us, I'll be forced to assume that you are a cop or in the immediate family of one.