The most common and most likely answer to this crossword clue is the 8 letter word GROOMING
G
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Buddy explains!
The straight part
We know that "educational activity" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case educational activity = grooming.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 GROOMING mean?
GROOMING verb- To attend to one's appearance and clothing.
- To care for (horses or other animals) by brushing and cleaning them.
- To prepare (someone) for election or appointment.
- To prepare (a ski slope) for skiers by packing down the snow.
- To attempt to gain the trust of (somebody, especially a minor) with the intention of subjecting them to abusive or exploitative behaviour such as sexual abuse or human trafficking.
- In agile software development, to review and prioritize the items in the development backlog.
- Care for one's personal appearance, hygiene, and clothing.
- The practice of primates picking through the hair of others, looking for insects etc.
- The act of teaching someone, often for advancement at work.
- Caring for horses or other animals by brushing and cleaning them.
- The act of attempting to gain the trust of a minor with the intention of having a sexual relationship with him or her.
- In agile software development, the reviewing and prioritization of items in the development backlog.