Morals and Academic Excellence

Nurturing minds and hearts through compassion, understanding, and teamwork among teachers, parents, and students.

Lertlah School Division

Lertlah School, a bilingual school in Bangkok

Lertlah’s English Program (EP) combines the Thai curriculum with elements of the Canadian education system, from Nursery to Grade 9 (Mathayom 3). The school was founded on Petkasem Road in 1994 and is now a private school with three campuses: two on the Thonburi side, Petkasem (Nong Khaem district) and Kanchanapisek (Bang Bon district), and the third, Kaset-Nawamin, in Bueng Kum district. There is no entrance examination, only a placement test, and families can apply through any campus.

See all three campuses Admissions

School Philosophy

“Morals and Academic Excellence”

Nurturing minds and hearts through compassion, understanding, and teamwork among teachers, parents, and students.

Academic Curriculum

Lertlah Petkasem Road

A pioneering campus offering both English and International Programs, integrating Thai and Canadian curricula. Petkasem Campus focuses on immersive bilingual learning, technology integration, and child-centered development from Nursery to Middle School.

Lertlah Kanchanapisek Road

A model of holistic education rooted in academic excellence, virtue, and community values. Kanchanapisek Campus emphasizes critical thinking, creativity, and collaboration across its strong English Program foundation.

Lertlah Kaset-Nawamin Road

An innovation-driven campus with advanced ICT and a forward-thinking curriculum. Kaset-Nawamin Campus develops students through a balance of academic rigor, moral growth, and real-world learning, empowering learners to thrive globally.

Policy

Morals

Aiming for students to have virtues as their foundation in developing and maturing in their society.

Academics

Aiming for students to have patience, diligence and determination in developing their academic skills and talents.

Health

Aiming to enhance healthiness in students through nutritious diets and exercises.

History

Lertlah School, established in 1994, brings three decades of experience in delivering a bilingual education that integrates Thai and Canadian curricula, ensuring a solid foundation for its students’ futures.

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Students at Lertlah School engaged in a bilingual classroom lesson

Mission

Lertlah School’s mission is to provide a balanced education integrating Thai and Canadian curricula, fostering bilingual skills and global awareness. It aims to nurture lifelong learners prepared for success in a changing world.

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A Lertlah teacher leading hands-on learning with students

Statistics

3,136+

Current Students Enrolled

564+

Teachers

Campuses

1994

Established

Testimonials

Parents of Best and Book

Petkasem Campus

“As parents of our two daughters Belle and Book, we are very impressed that our daughters have studied at Lertlah School starting from K.1 until Grade 6. The teachers take good care of every student with love and kindness. They are very friendly and willing to listen to parents and students. Lertlah School works closely with parents so that parents know everything about what their child has done at school, as well as the child’s development, and academic strengths and weaknesses.”