Main study among older children (7-16 years)  School inclusion criteria:  School is part of Splash Project WISE implementation groups School agrees to participate in the research  School exclusion criteria:  School has received a water, sanitation, or hygiene intervention in the three years prior to study activities School is kindergarten only School is secondary only (grades 9 and above, equivalent) School provides education to vulnerable population groups only  Child inclusion criteria:  Child is registered at a school that meets eligibility criteria and selected for the study Child is in grades 2-8 Child's parents do not return the opt-out consent form Child provides assent to participate in the research  Child exclusion criteria:  Child is unable to provide assent for data collection Child is 17 or older Child does not meet age eligibility for specific data collection activities  Kindergarten evaluation (4-6 years)  School inclusion criteria:  School is part of Splash Project WISE implementation groups School has a kindergarten School agrees to participate in the research  School exclusion criteria:  School has received a water, sanitation, or hygiene intervention in the three years prior to study activities School provides education to vulnerable population groups only  Child inclusion criteria:  Child is registered at a school that meets eligibility criteria and selected for the study Child is in kindergarten Child's parent/guardian provides consent to participate in the research  Child exclusion criteria:  Child is 7 or older