Or put the fish in an empty locker and glue it shut. Print up false notices on school letterhead and distribute them to the teachers mailboxes. Eventually, they ll never know what to believe. Print up a rap sheet with their names and telephone numbers and distribute it. Now students can call up at any time and reprimand them.
Teachers often leave grade books unguarded.
Start wailing in the halls. Play with lighting and microphone controls during assemblies. Set up a fake school and hire away the lousy teachers. Read the school budget. Distribute a list of the stupid expenditures.