Pupil primarily in uniform perhaps to be examined (6)

I believe the answer is:

probed

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

'be examined' is the definition.
(I've seen this in another clue)

I can't explain the remainder of the clue.

(Other definitions for probed that I've seen before include "Questioned or examined thoroughly and closely" , "Physically examined" , "Did research" , "Investigated closely as dentist does a tooth" , "Examined, dug into" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app