Ga-Metru Schools

Nokama's Classroom was where Nokama taught her students when she was a Matoran. After class was dismissed, sometimes Vhisola stayed after for tutoring. It was destroyed or severely damaged by the Great Cataclysm and repaired 1,001 years later by the Staff of Artahka.

Dark Mirror
In the Dark Mirror universe, the classrooms were the re-education centers, ran by Gali and Karzahni to train disobedient Matoran.