The most common and most likely answer to this crossword clue is the 7 letter word TUITION
I've seen this crossword clue in Independent
T
U
I
T
I
O
N
More clues leading to the result TUITION
- Training in it out at sea
- Sixth sense that's lacking in education
- University training? Feeling not fashionable
- Quite content one’s charged following dip in river – for which 26 said sorry
- 4 not having the benefit of home schooling
- Gut feeling that’s displaced in teaching
- One may set out in it for instruction
- I tut about charge for lessons
- Teaching union getting into difficulty about independent head
- Insight lacking in education
Buddy explains!

The straight part
We know that "schooling" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case schooling = tuition.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 TUITION mean?
TUITION noun- A sum of money paid for instruction (such as in a high school, boarding school, university, or college).
- The training or instruction provided by a teacher or tutor.
- Care, guardianship.