school trip; field trip; school excursion
A trip organized by a school for students, often with educational and sightseeing purposes; in Japan this commonly refers to a major class or grade-level trip.
I went to Kyoto on a junior high school trip.
来月、娘は修学旅行で奈良を訪れる。
Next month, my daughter will visit Nara on a school trip.
Next month we're going on a school trip to Kyoto.
We visited a temple in Nara during our school trip.
I couldn't take part in the school trip because I wasn't feeling well.