to the people who are not fasting cause they think they can make up for it later ~ you can't simply make up for it, of course you will have to do qada'a for your missed days, but if you miss your fast on purpose, you will also face a punishment for it in the hereafter...its about the same as...
an idea - give your class a general challenge and sort of predict what kind of response most of them would give and analyse that according to their "ideals, backgrounds, emotions and relationships", that is if you can.
our school accelerates in maths, english, bio, physics and chem...I'm doing HSC this year for maths and bio even though I'm in year 11 (plus we don't get a choice, if the principal says we have to accelerate, then we HAVE to).