Up front I must tell you that two of the young men who run Bali Green Surf School have been friends of ours since they were teenagers. They used to teach surfing at one of the big surf schools and then one was involved with a yayasan (foundation) teaching orphans surfing.
Anyway to cut a long story short... A while ago they branched out into business for themselves with Bali Green Surf. They try to give something back to the community by helping less fortunate kids, getting them together on a Sunday for surfing and helping out with food, clothing etc. Importantly they also educate them about the environment in Bali. Some of their profits are used in this way.
This is obviously a small project but it seems to me that the only way to stop the environmental disaster that is Bali is by starting with the kids.
Anyway if you or your kids want to learn surfing or go on a surf camp you could certainly consider maybe spending your money with these guys.