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Coached (7 letter answer)
The answer TUTORED is rarely seen, appearing only about once every 1600 puzzles.
Taught a lesson, maybe
Like slow students, sometimes
What a flautist in a limerick did
What Aristotle did for Alexander the Great
TUTOR as a verb:
1. be a tutor to someone; give individual instruction; "She tutored me in Spanish"
2. act as a guardian to someone