Via Bruce Schneier:
The NSA has a site for kids.
Crypto Cat, Decipher Dog, and friends.
Export Control Ernie isn't part of the gang, but one of Schneier's readers couldn't help himself:
That sounds like a nice utopian world, but shouldn't it read "not passing unbreakable ciphertext in class"? It could be something like:
Dear kids, please ensure that your teacher can decipher all your messages. If you figure out how to make something unbreakable, please bring it to your teacher for proper review and full credit. Thank you. Sincerely, Your government.
Hmmm...that sounds awfully familiar.