1. School Nature: Is Qiushi Middle School a public school or a private school? Tuition fees in public schools are usually subsidized by the government, so the tuition fees are relatively uniform. The tuition fees of private schools are determined by the schools themselves, and usually vary according to the quality, facilities and teaching resources of the schools.

2. Type of students: Is Qiushi Middle School a single-sex school or a coeducational school? If it is a single-sex school, the difference in tuition fees is caused by the difference in teaching resources and teacher allocation between boys' and girls' schools. If it is a coeducational school, the difference in tuition fees is caused by the different educational needs and curriculum settings of students of different sexes.

3. Other factors: apart from gender, the difference in tuition fees is also related to students' long class hours, accommodation conditions and extracurricular activities. Some schools will offer different courses and services, and these extra costs will lead to differences in tuition fees.