* The study aims to evaluate the acceptability and impact of two versions of the "Magic Glasses" programs among schoolchildren in Cambodia, Lao PDR, and Thailand, specifically focusing on soil-transmitted helminths (STH) and Opisthorchis viverrini (OV).
* A cluster randomized controlled trial will be conducted, assessing initial and sustained acceptability through questionnaires and discussions, while measuring the impact on students' knowledge, attitudes, and