1. Educational resources: As a middle school in the city, Liuzhou No.15 Middle School will have more educational resources, such as libraries, laboratories, sports venues and other facilities. Rongshui Ethnic Middle School has relatively few educational resources due to geographical restrictions.

2. Teachers: Liuzhou No.15 Middle School, as an urban middle school, has stronger teachers, more professional teachers and higher level of educational resources. Rongshui Ethnic Middle School has relatively few teachers because of its geographical location and other reasons.

3. Quality of students: The city where Liuzhou No.15 Middle School is located may be more developed, with more educational resources and opportunities, and the quality of students will be higher. However, due to geographical location and other reasons, the quality of students in Rongshui National Middle School is relatively low.