"New classmates" refers to people who are newly assigned or joined a class or school who will be studying together for a period of time. Full definition
My daughter changed schools and the different routine she's having to adjust to, as well as new classmates and teachers, has thrown her for a serious loop. (romper.com)
He has such a love of learning and exploring and I can't wait to see how much fun he has learning alongside new classmates his same age. (lindsaysatmary.com)
It's not often that the introduction of new classmates is the subject of a research project, but Thomas and P!nk are a little different. (teachermagazine.com.au)