There was a film that we watched where "mutual masturbation" was mentioned by some person not affiliated with any sex ed. program. I think she actually had HIV or something... but anyway, she mentioned it as an alternative to sex and/or oral sex, and my teacher flat out told us to ignore everything she was saying.
Raisin, you should visit Planned Parenthood's teen site, called TeenWire.com. Seriously. I'd recommend it to anyone our age. It's like sex ed the teen way. You can find basically anything you have a question about on there. They have articles, questions answered that are submitted by kids (You can submit a question if you can't find the answer there), diagrams, and they even have videos about certain things, such as putting on a condom (Don't worry, it's completely PG-13). I hope no one finds it inappropriate to recommend sites like these... They're completely educational!
It's a great and extremely useful site.