Last weekend, SBPIS held a gotong-royong activity in school. All students who were involved in this activity were arm in arm cleaning the school compound. The purpose of this activity was to reduce the mosquito population by getting rid of places where mosquitoes can breed. The students were asked by the teachers in charge to check on every places in the school which have been the breeding ground of mosquitoes. These included old tires, cans, or flower pots that collected rain.