Riding School

It's been a while since I've been able to play equiverse so I've forgotten how to put my horses in riding lessons, and I've forgotten what the benefit of doing that it, if you could help me put I'd be so grateful 

This is from help section: "A riding school is an alternate to showing for horses - each hour of riding school takes up a showing slot, so be sure to avoid entering horses into riding schools if you want to show them.

You can earn EXP, money, items, and a 0-1 stat increase per hour a horse is entered in a riding school. Find riding schools using the Stable Search page.

Please note that the discipline shown as 'popular' for riding schools changes at random. There is a small bonus if your horse's discipline matches the current popular one".

Players send horses to riding school if their nss are too high to give them a winning chance in shows or when horses just got to the next grade and their stats are still too low to bank them a podium place