It's not about what they think...its the fact you let them down as a teacher. Doesnt seem so bad when your in school but I feel it in a slightly different light now. It's not up to me to say "well I needed a lie in so it doesnt matter that it messed with your education...not to mention your hard earned cash" This is for thier livelyhoods..and especially in these kind of countries it seems very important.
But maybe it seems like I'm just warbling out my (-) so I'll stop now.