'school-related' originates from the combination of 'school' and 'related', where 'school' refers to an educational institution and 'related' means connected or associated with.

'School' comes from the Old English 'scol', which was derived from the Latin 'schola', meaning 'place of instruction'. 'Related' comes from the Latin 'relatus', the past participle of 'referre', meaning 'to bring back'.

Initially, 'school' meant a place of learning, and 'related' meant connected. Together, they have maintained the meaning of being associated with educational institutions.