On startup on May 17th 1954, the school had four teachers and one classroom. In 1955 the school went through its first expansion by adding a total of three academic years and the number of students rose to 252, and through the years since the school has continued to expand and currently, as of February 2022, the school now has 250 staff members and 3500 students.

The school teaches preschool and reception levels, kindergarten levels, primary years 1 through 6 and secondary years 1 through 6.    In 1998 Pholwittaya Bilingual School was founded and added to the organization as part of the commitment to modern and developing education practices. The Bilingual School delivers a program taught in both English and Thai languages by fully qualified teachers and follows a curriculum that reflects international education standards.