In our eco club after school club we discussed how we can save on energy. Some of the suggestions included motion censored lights. As we have already got some install in school, we walked around identified where they are. The children found that they were in the school hall, school kitchen and outside the hall and school office. 
Since then, we have had 4 more motion sensored lights installed in the playground, outside Buzzard building, outside the library and one in the undercover walkway.