The same lecturer's class? (7)
I believe the answer is:
uniform
'the same' is the definition.
(thesaurus)
'lecturer's class?' is the wordplay.
'lecturer's' becomes 'uni' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'class?' becomes 'form' (synonyms).
'uni'+'form'='UNIFORM'
Can you help me to learn more?
(Other definitions for uniform that I've seen before include "Unvarying - work clothing" , "Military wear" , "Comms code for U" , "Military clothing" , "reluctant pupils may be forced to wear it" .)