Pitfalls of early graduation from high school (may be spoilers)

This is crazy-insane. I deliberately made what I call a Flashback save, since my Global Superstar, Rock Star, has already received his Distinguished Degree in Fine Art(s) from Britechester-U. He's been married to his high school Sweetheart since they graduated and right before they both entered Uni, together. They are now the proud parents of six, count 'em, SIX children. I just thought it would be fun to see him go through HSY. That's what I get for thinking …