The most common and most likely answer to this crossword clue is the 7 letter word EDUCATE
I've seen this crossword clue in The Daily Telegraph
E
D
U
C
A
T
E
More clues leading to the result EDUCATE
- Old coin found in early English school
- Train ferries coin between terminals in Stoke and Carlisle
- School note expected about pet?
- Teach Europeans about old Continental coin
- Train outside of Eastbourne carrying coin
- Inform journalist you heard about alien uprising
- Documentaries about losing minors’ letters in train
- Bring up empty envelope? Gold coin is inside
- School cash once collected by no-frills Beeb
- Vintage coin found inside empty Eastbourne train
Buddy explains!

The straight part
We know that "School" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case school = educate.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 EDUCATE mean?
EDUCATE verb- To instruct or train