transfer student; student who changes schools
Refers to a student who has moved from one school to another, often used in school-life contexts.
今日、クラスに転校生が来た。
A transfer student came to our class today.
彼は先月、転校生としてこの学校に入った。
He entered this school as a transfer student last month.
A transfer student came to our class today.
A new transfer student joined the class.
He introduced himself as the new transfer student.
The everyday counter for people: 一人 (ひとり), 二人 (ふたり), 三人 (さんにん).
More formal than 人 — used for headcounts in reservations, staff lists, and announcements (5名様).
Compound of 転校 (てんこう, 'changing schools') + 生 (せい, 'student').