Due to the high thermal mass of rammed earth walls, temperature variations are moderated, thus eliminating the need for air conditioning. In addition, rammed earth walls keep humidity at specific levels which are ideal for asthma sufferers. The several open pavilions (which are called "sala" in Thai) that house the assembly hall, the Buddhist chapel, the school canteen, and a covered play area next to the swimming pool, are completely made out of bamboo, also using bamboo set on large boulders of natural stone for the structural supports. "24H Architecture" from the Netherlands was responsible for the initial design. with the construction and subsequent designs of additional buildings by Chiangmai Life Construction. Also in adherence to the concepts behind sustainable architecture, waste water is treated before its re-entry into the environment, and food waste is recycled to produce biogas for cooking in the school kitchen, and as organic fertilizer for use on the school grounds. To minimise the need for artificial lighting, skylights are incorporated into the roofs of the buildings.