Non French Speaking children - Skiing In France?

We were planning on a family ski trip to France this Christmas. We have three kids aged 8, 8, and 9 who only speak English. (shame!) . Ive just read a review saying that the kids ski school didn't work out at all as they only spoke French. We were planning on them participating in ski school and kids club and hopefully making some little friends.

Is this the case? Will we find it difficult, esp the kids? Perhaps we should go back to Colorado or somewhere in the states?