I guess I failed to answer your question... which is hard to believe considering the obnoxious amount of text.

Yes, you can try and bring in supplies if you want to give them out for the kids. Technically, you are required to declare these goods on the way in, however, you might be required to pay the duties/import tax owed. If you don't declare the goods, you run the risk of being questioned about them. You might be given some slack if the goods are blatantly for kids and you explain they are for a school (and you can name the school). I don't know much about this and I would never suggest anyone break any laws.