Have intercourse with teacher? (3)
I believe the answer is:
bed
This clue is a double definition.
'have intercourse' is the first definition.
('bed' can be a synonym of 'have intercourse')
'teacher?' is the second definition.
(bachelor of education)
'with' is the link.
(Other definitions for bed that I've seen before include "(Garden) plot" , "Matrimonial duties" , "Divan" , "For sleep and flowers" , "Plot in which plants are growing" .)