Tonkla School is a private bilingual day school in San Sai District, Chiang Mai, serving kindergarten, primary, and high school students. The school delivers a Thai–English model with roughly half of lesson time in each language across levels, and English homeroom teachers in classrooms from Kindergarten 3 through Grade 6. In early years, Tonkla implements the HEI Schools Teacher Toolkit from Finland, and in primary it offers an International Program that adopts the International Primary Curriculum alongside the Thai core curriculum. Public materials describe play-based and project-based learning, small-group activities, and community links. The campus sits off the Chiang Mai - Mae Jo Road and the school publishes admissions information, calendars, newsletters, and news on its official site and social channels. Tonkla operates as a private K–12 institution under the Ministry of Education and is not a language academy or a university.