Globulation2

I have noticed that for some reason the workers are not using the schools I built. Usually when I notice this, the jobs available double or triple the workers. But even when that comes down to 3 jobs per two workers, they are not using the schools. After a while they do, but I lose valuable time waiting for this. I am not sure if this is a bug or a feature request. What is the current priority on upgrading?

workers don't join upgrades when they are too busy. Close to the top left corner you see some numbers, they mean free/total workers. When you overload them, the line becomes red and may show something like -5/40. The first number must be positive to let them learn!

and not only learn, train how to swim and use racetrack too. They won't waste time to upgrade themselves if you gave them a work to do which needs more of them than they actually are, as fede said.