Board Thread:Modding Discussion/@comment-32134613-20170528144548/@comment-32346540-20170630200329

The lockers correspond the students's ID numbers. They are in the JSON files. The last used locker is of the last student in the ID numbers. For exemple, let's suppose you have 36 students in the game. The 36th locker is the last used one, so of 37th to the last unused locker are the unused ones.