Lertlah School has developed our own curriculum through integrating the core curriculum of the Ministry of Education with the core curriculum of the Ministry of Education, Canada using English for instruction in order for our students to gain knowledge alongside Thai culture. There are two programs provided; English Program and International Program. They are as follows:
Lertlah School has introduced an effective English instructing innovation called GrapeSEED English Communication Solution taught by native English speaking teachers. Eventually GrapeSEED will be taught from Nursery to Middle School 3. There are 40 units in total. This innovation assists students to develop their English listening, speaking, reading, writing skills and also helps them to think in English which helps build up their confidence and to be able to use English like a native English speaker.