Caught pumas straying in school region (6)
I believe the answer is:
campus
'school region' is the definition.
'campus' can be an answer for 'region' (campus is a kind of region). I'm not sure about the 'school' bit.
'caught pumas straying in' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'straying' indicates anagramming the letters.
'in' means one lot of letters goes inside another.
'pumas' anagrammed gives 'ampus'.
'c' placed into 'ampus' is 'CAMPUS'.
Can you help me to learn more?
(Other definitions for campus that I've seen before include "University location" , "university territory" , "university environment" , "university's environs" , "Higher education sector" .)