The most common and most likely answer to this crossword clue is the 5 letter word TUTEE
I've seen this crossword clue in The Daily Telegraph
T
U
T
E
E
More clues leading to the result TUTEE
- One being taught French you support on course
- Do put in support for learner
- Course support needed by tense university student
- One learning up front that university’s typically extremely expensive
- One being coached in statute examination
- Student Union given little support
- Pharaoh with extremely effeminate student
- Workers organised support for driver, a learner
- Trade union support for one being instructed
- Student’s notes on boy king
Buddy explains!

The straight part
We know that "one being instructed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one being instructed = tutee.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TUTEE mean?
TUTEE noun- A student of a tutor.