Prairie dog shooter:
Keeping cool (cold?) is the best thing and I think you are doing an admirable job. Getting yourself arrested is sure not what your kid needs, and I am glad that you are keeping your cool.
I would unleash the most terrifying weapon known to exist in the American arsenal upon the culprit -- an ominous and vaguely threatening letter from a the scariest lawyer you can find! Seriously. To both the school and the individual involved...
A lawyer won't charge you much for an initial consultation to get the details and to prepare a letter (and which would be delivered not by mail but by your lawyer's normal process server to add to the overall effect).
I had to do something like this once before I moved to Sweden and it worked very well -- but here, lawyers do not inspire fear like they do in the US!
John
