ve有一种囚犯叫学生

It's not starting with 've'. Correcting it, this name '有一种囚犯叫学生' means 'There is a type of prisoner named students'. This humorous expression humorously implies that students lack freedom in their school lives and thus resemble prisoners. Students spend most of their time following strict routines and schedules under close supervision, which leads people to compare schools to prisons. Though not appropriate, such comparison does reflect some students' frustration and desire to be more liberated. The student chose such a nickname, possibly as a form of self-relief