Pursue the tests as normal and disregard the fact that there is no knight present to be apprenticed to. For page, do the page tests and substitute the knight in the defense trial for another of reasonable skill level (this is up to you all). For squire...we're not really sure yet. This is one of the things we need to discuss at Gates.
There will probably be a number of people appointed that can count towards marking against a knight, for the purpose of ranking for squire and knight.