An 8-lesson classroom education programme
For the selected classes, the usual health education lessons (a 40 minute lesson, every two weeks; a total of 8 lessons in one school term of 3.5 months) in the curriculum were replaced with an 8-lesson salt reduction education programme, including three proactive and interactive lectures, one themed class meeting to share experiences, one class meeting for family participation, and three other activities to assist in salt reduction.