Those who are in the Brawl Stars Academy are: Joker Chester, Jock Stu, Bad Emz, Nerd Squeak, Cheer Leader Rosa, Unruly Penny and Professor Barley [OTHER ADDED FOR THE NEXT UPDATE OF THE BRAWL STARS ACADEMY] and the lockers are with drawings or stickers 

Joker Chester's Gender: Male
Jock Stu's Gender: Male 
Nerd Squeak's Gender: Male
Professor Barley's Gender: Male
Bad Emz' Gender: Female 
Cheer Leader Rosa' Gender: Female 
Unruly Penny's Gender: Female