What's carried by tutees, say — some submissions to tutor? (6)
I believe the answer is:
essays
'submissions to tutor?' is the definition.
(students may submit essays to a tutor)
'what's carried by tutees say some' is the wordplay.
'what's carried by' indicates a hidden word.
'ESSAYS' is hidden in the letters of 'tutees say some'.
(Other definitions for essays that I've seen before include "Compostions and tracts" , "Tries to write compositions?" , "Makes attempt to do short pieces of writing" , "Tries for theses?" , "literary work" .)