British schoolkid returns memo to Thorpe (7)
I believe the answer is:
etonian
'british schoolkid' is the definition.
I can't tell whether this defines the answer.
'returns memo to thorpe' is the wordplay.
'returns' is a reversal indicator.
'memo' becomes 'note' (I've seen this in another clue).
'to thorpe' becomes 'Ian' (Ian Thorpe is an Australian swimmer).
'note' in reverse letter order is 'eton'.
'eton'+'ian'='ETONIAN'
Can you help me to learn more?
(Other definitions for etonian that I've seen before include "Pupil at posh English school" , "student in establishment?" , "English student" , "One educated at famous public school" , "Alumnus of famous English school" .)