Scrooge giving away his last coin, needed by English school badly (10)
I believe the answer is:
miseducate
'scrooge giving away his last coin needed by english' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'school badly' is the wordplay.
I cannot quite see how this works, but
'school' could be 'educate' (synonyms) and 'educate' is found in the answer.
The remaining letters 'mis' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for miseducate that I've seen is " Fail as teacher".)