Religious education — and saint's observations (7)
I believe the answer is:
remarks
'observations' is the definition.
(I know this)
'religious education and saint's' is the wordplay.
'religious education' becomes 'RE' (abbreviation).
'and' means one lot of letters go next to another.
'saint's' becomes 'marks' (I am not sure about this - if you are sure you should believe this answer much more).
're'+'marks'='REMARKS'
Can you help me to learn more?
(Other definitions for remarks that I've seen before include "See 14" , "Comments, observations" .)