After entering the 20th century, the French Ministry of Public Education, which directly reflects the will of the French government to develop education, has played an active role in all previous educational reforms. For example, in 1923, when Leon Bellard became the Minister of Public Education, the power of the Ministry of Public Education showed some signs of expansion. At the end of 1923, the Ministry of Public Education developed a detailed curriculum for all grades of national and municipal secondary schools. When heriott was in charge of the Ministry of Public Education, he promoted a "unified" curriculum reform to unify the contents of the same teaching subject in the science curriculum plans of senior primary schools, municipal middle schools and national middle schools.