About the school...once it is founded, there is no further conversion possible. Check the version of the game that you're running (on the menu screen). If it's v1.01, then you have a version of the game that, for some reason, is missing that last-minute fix. It doesn't affect the game, though, and you should just ignore it.

If you have v1.00, then you should update to v1.01 by downloading the trial and installing it in the same location. Note: You must download the updated version from the same site that you purchased the game from, or your registration code will no longer work!