studies have shown that gaming helps people's memory capacity, both short and long. Also educational games, like any other kind of games, are easily remembered as a kind of entertainment rather than "work" or "that maths lesson i did today".
There over 9000!!!!!!!!!! Nah. There are as many permutations as there are people in education in NC. Well, hello! You reworded the question to mean something entirely different. Who the eff knows?
In "Hunger Games" by Suzanne Collins, Katniss Everdeen is said to be attending the only school in District 12 where, assumably, children of all ages go for their education.