theres a huge difference between
to be inspired by
to totally rip off!
you clearly did the latter, perhaps you like pico's school, i dont know. but considering the design of the game, i certainly wouldnt be surprised if you decompiled the swf file of pico school, edited it slightly and handed it in as your own work.
if this is yours, and you programmed it all yourself, for god's sake be more creative!