Here's my version of it which you can save to your computer!
http://www.sendspace.com/file/qjy71mDo you know how to change what subject you teach? Well, while viewing the screen on the check meter which shows what subject you teach, press B. Then choose the top option then you get to choose (according to what I could make out of the instruction booklet).
And it says in the manual about the C button trick... I think it was just to make it cute!
Tamaboi, just continue to keep yourself popular (so you don't lose students) and maybe extra students will come!
Anybody have a Tamagotchi School 2? You can teach music, physical education and art on it according to the website!