Teacher’s to take one school to collect college books (6)
I believe the answer is:
scotch
'teacher's to take one' is the definition.
(Teacher's Highland Cream is an example of Scotch)
'school to collect college books' is the wordplay.
'school' becomes 'sch'.
'to collect' indicates putting letters inside.
'college' becomes 'c'.
'books' becomes 'ot' (Old Testament).
'c'+'ot'='cot'
'sch' placed around 'cot' is 'SCOTCH'.
(Other definitions for scotch that I've seen before include "See 1" , "Put the lid on" , "Put an end to - in Caledonia?" , "Put a stop to - whisky" , "Thwart - sort of broth, mist or egg" .)