When the game first launched, I didn't have this issue, but just recently, I noticed that a judge wouldn't show up at the event anymore. Sometimes, there will be a teacher but not a judge.
Edit By...
Ideas
I had my Sim go to the Science Fair (High School Years EP) and make a game jam entry. The game prompted me to submit my entry to the competition judge, but no judge showed up the whole time. No result was announced, the festival just ended.
Just had this bug as well. A teacher showed up, but when I checked all of the pie menus, I didn't see any options to submit a score.
