Group leader reportedly prohibited teacher (10)

I believe the answer is:

bandmaster

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'group leader' is the definition.
'bandmaster' can be an answer for 'leader' (thesaurus). I'm not certain of the 'group' bit.

'reportedly prohibited teacher' is the wordplay.
'reportedly' indicates a 'sounds like' (homophone) clue.
'prohibited' becomes 'banned' (banning is a kind of prohibiting).
'teacher' becomes 'master' (I've seen this before).
'banned' sounds like 'band'.
'band'+'master'='BANDMASTER'

Can you help me to learn more?

(Other definitions for bandmaster that I've seen before include "Military conductor" , "Samba trend (anag.)" .)

I've seen this clue in The Daily Express.

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