Frassati Catholic Academy – preschool, elementary & middle school. Frassati Catholic Academy is a preschool, elementary and middle school offering instruction in preschool-8th grades. We serve the greater Lake County area, primarily serving the parishes of St. Mary of the Annunciation and Santa Maria del Popolo in Mundelein, and Transfiguration Parish in Wauconda. We offer full and half-day preschool programs, a state-funded Preschool for All program, full-day kindergarten, convenient transportation to and from the surrounding areas, and an extended day program before and after school.