Under the French colonial period, in addition to the public school system, the French government has allowed the opening of many private schools to serve political goals and meet the learning needs of the people. To contribute to clarify the current situation of private schools in Annam during the French colonial period, based on documents of the French government including Decrees, Yearbook Reports, statistical documents... the article focuses on clarifying the The colonial government's private education policy from the second educational reform (1917 to 1945), at the same time restoring the private school system in Annam in terms of schools, programs, and studies, etc. On that basis, the author presents a few comments on private education in Annam since the second educational reform (from 1917 to 1945) and compare it with private education in Tonkin, Cochinchina during the same study period.