sentences:  ACS students participate actively in academic competitions at the state and national level, including MATHCOUNTS, Science Olympiad, and other math and science competitions, as well spelling bees, geography bees, and contests in other subjects.The Chess Club competes locally, and won the first-place trophy in the Naperville Chess Tournament in 2009.Admission is competitive and decisions are based on evaluations of applicants' intellectual ability, social and emotional maturity, and readiness for the accelerated program of study.