means An institution where children and others go to be taught, or the time spent there learning.

from From Greek 'scholē,' which originally meant leisure or spare time — the free hours a person might spend in discussion and learning rather than labor. The sense drifted from 'leisure' to 'how one fills leisure with study' to 'a place of study,' passing through Latin 'schola' before reaching Old English. So the word for the building of bells and deadlines began life meaning the exact opposite: time off.