What singers do that's amazing in school? (6)
I believe the answer is:
scorch
'what singers do' is the definition.
The definition suggests a singular noun which matches the answer.
'amazing in school?' is the wordplay.
'amazing' becomes 'cor' (both are expressions of surprise).
'in' is an insertion indicator.
'school?' becomes 'sch' (common abbreviation).
'cor' put into 'sch' is 'SCORCH'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for scorch that I've seen before include "Wither from exposure to heat" , "Burn lightly" , "Become burnt in places" , "Mark by overheating" , "Burn; drive very fast (informal)" .)