surely
the success of the competition should be judged on how many took part, or similar, not who won. Anyone who takes up STEM in order to "win prizes" is very probably going to be disappointed in their subsequent career: afaict there are very few prizes, let alone many of note, and how winners are chosen is rather a mysterious (and very probably not very fair) process - e.g. the invariable debate about who should have (also) shared the Nobel prize in physics in any given year.