Plan for former teacher's favourite embracing college (6)
I believe the answer is:
expect
'plan' is the definition.
(expecting is a kind of planning)
'former teacher's favourite embracing college' is the wordplay.
'former' becomes 'ex'.
'teacher's favourite' becomes 'pet' (I am not sure about this - if you are sure you should believe this answer much more).
'embracing' means one lot of letters goes inside another.
'college' becomes 'c'.
'pet' enclosing 'c' is 'pect'.
'ex'+'pect'='EXPECT'
'for' is the link.
Can you help me to learn more?
(Other definitions for expect that I've seen before include "Regard (someone) as likely to arrive" , "Consider likely to happen" , "Regard (something) as likely to happen" , "demand and > have prospects" , "Wait for" .)