An intervention study with the case-control design was conducted at 8 schools of 4 communes of Vu Thu district, Thai Binh province. The improved communicating methods (called Active communicating method - "directly ask/answer") were used to educate students, teachers, and parents on nutrition and hygiene for better health for 3 years. An assessment of one year intervention on pupils' and their parents' knowledge about nutrition and hygiene showed that the knowledge of pupils and their parents was significantly increased (P<0.05). In addition, the model of school-based active communicating method - "directly ask/answer" was positively supported by many teachers, pupils and their parents
nutrition, hygienic knowledge ; Nutritional Status ; Hygiene ; health