Lertlah School Petkasem Road is the leader in administrating an English Program through an international standard of administration. We aim to educate learners to be able to apply their technological knowledge and skills in procuring new knowledge in English and Thai, in order to communicate appropriately in accordance with their age level. We believe that through cooperation among parents, the community and teachers with child-centered learning in mind, the expected outcomes are learners who recognize the values of the Thai culture, possess good health and mind, act with virtues and care for the environment.