Crossword Genius

Oh! Fleecy kid interrupted school pursuit (5,6)

Ross

I believe the answer is:

field hockey

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

'interrupted school pursuit' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'oh fleecy kid' is the wordplay.
'oh fleecy kid' can be anagrammed to 'FIELD HOCKEY'.
But, I'm unsure how the anagram is indicated.

Can you help me to learn more?

I've seen this clue in The Mirror.
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