Crossword Genius

Group of swimmers in educational establishment (6)

Ross

I believe the answer is:

school

I believe this clue is a double definition.

'group of swimmers' is the first definition.
(school can mean a group of fish)

'educational establishment' is the second definition.
(I've seen this before)

'in' acts as a link.

(Other definitions for school that I've seen before include "Where one teaches" , "Train (of thought?)" , "Discipline" , "Train - group of porpoises" , "Centre of learning" .)

I've seen this clue in The Times.
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