Tutor once again about to keep tabs on money (2-7)

I believe the answer is:

re-educate

I'm a little stuck... Click here to teach me more about this clue!

'to keep tabs on money' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'tutor once again' is the wordplay.
I cannot really understand how this works, but
'tutor' could be 'educate' (I've seen this before) and 'educate' is located in the answer.
'again' could be 're' (prefix meaning 'again') and 're' is present in the answer.
No letters remain.
This explanation may well be incorrect...

'about' is the link.

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I've seen this clue in The Independent.

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