Cool After School is a sports-focused after-school childcare and youth sports organisation based in Haarlem, the Netherlands. The organisation provides structured sports, games and physical activities for primary-school children, combining childcare with opportunities to develop sporting, social and personal skills. Its official website states that the programme is designed primarily for children aged four to twelve and places particular emphasis on movement, outdoor activity, healthy nutrition, enjoyment and personal development. The organisation began operating in 2020, with the founders Kevin and Sven Boelsma confirming that they opened Cool After School in that year. The Franciscus Xaverius School independently records the opening of the organisation's doors on 28 September 2020 and identifies Kevin Boelsma and Sven Boelsma as its owners. Cool After School is organised as Cool After School B.V. and operates multiple registered after-school childcare locations in Haarlem. Current official and municipal records identify facilities at H.M.H.C. Saxenburg, H.V.V. DSK and S.V. DIO, with the organisation using the sports facilities of partner clubs and schools to deliver its programmes. Its activity portfolio extends well beyond football. Children can participate in football, hockey, tennis and numerous other sports and games, while the organisation also runs football camps, hockey camps, all-sports camps, sports days, celebrations and sports tournaments for older participants. Football nevertheless forms an important component of the programme, with dedicated football camps and activities and several locations operating directly from football-club facilities. At H.V.V. DSK, for example, Cool After School provides sports-oriented childcare using the club's facilities for children aged four to twelve. The organisation's stated mission is to broaden children's horizons through sport and play and help them develop into healthy, active adults, while its educational approach emphasises inclusion, equality, individual attention, appropriate challenges, health and enjoyment. Cool After School therefore functions primarily as a youth sports and childcare organisation rather than as a conventional football club or professional football academy. Its work is closely connected with Haarlem's schools, sports clubs and community organisations, including collaborations supporting children's participation in sport and healthy physical activity.