The education system on Earth Vixon is quite odd.
There are traditional human school, both private and public. Those are schools for just humans. No monster's allowed.
There are both public and private monster schools. Those schools are just for monsters, no humans are needed.
In the non integrated schools they will learn only human/ monster history. The learn the evolution of both humans and monsters.
There are now more than ever quite a few schools that are integrated. They teach both humans and monsters. They learn the evolution of both groups. They learn traditional human subjects on top monster subjects.
There are also schools for magic users. They learn the history of magic, trials of magic users and other magic related things.

Here is a list of mentioned Schools.

So there are quite a few monsters. There are the main groups of people: Merfolk, Demons, Zombies/ Mummies, Humans, Gorgons, and Vampires.
Other groups are: Nymphs, Faires, Fire monsters, Shadow monsters, Lizardmen, Ice Monsters. If it could come out of a child's dream of nightmare it could be real on Earth Vixon.

The age system is quite odd here on Earth Vixon. Age is kinda the same for everyone. Whatever year you were born in is all that matters. However depending on where you love you might age faster or slower. In the ocean and in the underworld you age a little slower. In places like Gorgon territory people ages slightly faster due to stress in Gorgon spaces. In Vampire spaces It may depend on where or when you were turned. Werewolfs, Humans and Ghost age on our regular human system. Zombies other Undead beings don't age really.