"School trip" is the most commonly used phrase in Engpsh to refer to a trip taken by school students, usually for educational purposes. The phrase "school trip" is a direct translation from the Chinese term "学校旅行".
Examples:
"We're going on a school trip to the museum next week."
(我们下周要去博物馆参加学校旅行。)
"I'm really excited for the school trip to the beach."
(我对去海滩参加学校旅行非常兴奋。)
"Have you packed everything you need for the school trip?"
(你准备好了参加学校旅行需要的所有物品吗？)