"School 3a" usually means that the school has obtained the excellent grade of "teaching level, educational ability and management level" evaluated by the education administrative department. In other words, the school's teaching level, teaching staff, management level and other aspects have reached higher requirements, and it is an excellent school. Usually, a school will publicize in official website or related publicity materials to prove its strength and brand effect.

When parents choose a school, the school has already obtained "3a" certification, which is a guarantee for parents' confidence. School accreditation can not be completed in a day or two, but requires a lot of regular evaluation and audit. Therefore, schools with "3a" certification can generally provide students with a better educational environment, better teaching quality and better investment in teachers' resources. So it is very worthwhile for students to choose such a school.

For a school, obtaining 3a certification can provide a higher standard of support and guidance for the school's courses, activities and teachers. 3a certification can be used as the brand and advantage label of the school, which helps the school to be more competitive in the market in terms of enrollment, campus environment and teaching quality. For school teachers, 3a certification can also help them to better focus on the continuous improvement of teaching quality and teachers' quality, and provide better educational resources and environment for students.