Academic-based preschools and Kindergartens are the most structured of the different types, and have a strong emphasis on math and reading readiness skills. These programs aim to expose children to what early-elementary school is like. While time is still allotted to free play, much of the day is built around explicit lessons guided by the teacher. Classrooms often resemble play-based ones (with different stations set up around the room), but at an Academic program the teacher leads students through the stations directly, and ties these activities to a whole-class lesson or theme.