Crossword Genius

Fish placed between meat and two veg, might taking issue here prove costly? (7,7)

Ross

I believe the answer is:

private schools

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

'might taking issue here prove costly?' is the definition.
(issue can mean children)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.