Crossword Genius

Where boys were collared to go to school (4)

Ross

I believe the answer is:

eton

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

'to school' is the definition.
(famous UK public school)

'where boys were collared to go' is the wordplay.
I cannot quite understand how this works, but
'to' is present in the answer.
The remaining letters 'en' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for eton that I've seen before include "College, collar or crop" , "Berkshire public school" , "Note sent up to English public school" , "College in Berkshire" , "Berkshire town" .)

I've seen this clue in the Evening Standard.
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