Greetings EBers/the chosen ones, I have a question

I'd really like to know if there is a certain way of getting young family members to study in an academy. My situation is I am Macedon and I have all of mainland greece at my disposal. The son of Alkyoneus, Persues, is very soon to come of age and I want him to become a great general.

My client ruler in Sparte (aged 30) has randomly begun his education which I am surprised by and would like to know just how beneficial this could be if I could get persues to study there.

In short, how can I get FMs to study?, and where?

Cheers