Study objective: The primary objective of the study is to evaluate the impact of IPT for malaria in schoolchildren using monthly DP, as compared with the current standard of care (no IPT), on community-level indicators of malaria transmission. We will test the hypothesis that malaria transmission, as measured by the prevalence of asexual parasitaemia and the entomological inoculation rate (EIR), will be lower in communities surrounding the intervention schools, than those surrounding the control schools.