Analysis:
The education system in a narrow sense only refers to the school education system, referred to as the academic system, which is the general name of all kinds of schools in a country. The school education system is the core of the whole education system, so it is the most important part of the whole education system.
The core of the national education system is the school education system. The school education system is the core and the most important part of the national education system, which embodies the essence of a national education system. The school education system is the main body of the education system. The school education system, referred to as the academic system for short, refers to all kinds of school systems at all levels in a country, which specifies the nature, tasks, admission conditions, study years and the relationship between them.