I am currently working on a classroom addition for a high school which is a LEED project. We are designing a central courtyard that demonstrates a variety of LID features. These include porous concrete paving, four rain gardens and a cistern that collects rain water from the roof. Most of the materials being used have some recycled content. We are also using solar lights. The courtyard is designed to provide several outdoor classrooms and is a primary connector within the circulation of the school.