While I suppose it is not impossible. I always dread seeing a number so high in relation to alternate universes. Imagine, six hundred other realities and that is speaking conservatively.
That we are aware of there appear to be four or five worlds with our X-men here, some more that have all or part of the Avengers.
However, if you are looking to teach, we have quite a few younger members here whom we have been attempting to reign in.