Generally, most schools require the repetition rate of graduation thesis of junior college students to be between 30% and 35%. If the repetition rate exceeds 35%, those who can't take part in the thesis defense must take it back for repair.
The repetition rate of undergraduate thesis is required to be less than 30%. Of course, some universities require less than 20% or even 10%.
However, the specific paper repetition rate requirements still need to be subject to the announcement given by the school. You can visit the school in official website, or ask your tutor directly.