 The Unilever Lifebuoy School-Based Handwashing campaign School of 5 aims at raising hygiene awareness and the importance of handwashing with soap among school children and their parents attending rural Indian schools. The campaign is funded by Unilever Ltd India and Childrens Investment Fund Foundation CIFF. CIFF is paying for this evaluation. The aim of this trial is to evaluate the effect of the Unilever Lifebuoy School-Based Handwashing campaign on 1 handwashing behaviour in school aged children and their motherscarers primary outcome, 2 psychosocial indicators of hygiene behaviour in the target population; 3 on diarrhoea in children under 5 years of age living in families with school children attending intervention schools. 