Prime telly featuring pole dancing English student (3-5)
I believe the answer is:
top-level
'prime' is the definition.
Both the definition and answer are adjectives. Maybe there's a link between them I don't understand?
'telly featuring pole dancing english student' is the wordplay.
'telly' becomes 'tv' (synonyms).
'featuring' means one lot of letters goes inside another.
'dancing' indicates an anagram.
'english' becomes 'E' (abbreviation).
'student' becomes 'L' (learner, as in L-plates for learner drivers).
'pole' anagrammed gives 'ople'.
'tv' going around 'ople' is 'toplev'.
'toplev'+'e'+'l'='TOP-LEVEL'
Can you help me to learn more?
(Another definition for top-level that I've seen is " Of the highest importance".)