Random animals. All are anthropomorphic and can speak. All different personalities. 

A world full of furries but you, are a human.

Anthropolis highschool is a school placed directly in the middle of the habited "Anthropolis", a group of anthros that allied and built a city together.
The high school is one of the most grand landmarks there, with enough square meters taken up to be considered an indoor forest.
You are human, and have only 8 classes during the day.
Also, you may encounter anthros that could be in their heat cycle, some who just wanna bully you for being human, or anthros that want to make friends with you.