Current student group (6)

I believe the answer is:

stream

I believe this clue is a double definition.

'current' is the first definition.
(I know that current can be written as stream)

'student group' is the second definition.
(stream can mean a group of school pupils)

(Other definitions for stream that I've seen before include "schoolchildren grouped together" , "Small narrow river" , "'Current, flow (6)'" , "divide pupils into ability groups" , "Torrent" .)

I've seen this clue in The Times.

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