You might hate me for posting this Nana but I don't really see anything wrong with 7/11.
With my strange working hours, 7/11 can be very handy (that and Kao Mun Gai Pratunam) when I need to feed my hungry and thirsty staff at 3.30 in the morning. When I have to do a job (I'm a florist), apart from checking out the venue, I will always have to check out if there is a 7/11 nearby. Not that my life depends on it but it's there if I need something at the strange hours of the morning when other local shops are shut.
I do agree with you though that meals at 7/11 are not the same as freshly cook food but that should be common sense. Still, it is sad to say that parents these days are ignorant and lazy. You, as a teacher, is trying your best to do whatever you can to educate these children and it must have been frustrating. Keep on doing what you are doing...don't get too upset over it, you can only do what you can.
