Not sure why you want to install wamp in all machine while, in my opinion, you only teach student to code not to setup webserver; therefore, you should setup wamp in only 1 machine and setup accounts for each and all students, so each one can have their own website using php and mysql. Actually, this reminds when I was still in school and this is exactly what I've got at that time, one web account per student ;-)
Have fun,
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