Grade Advancement decisions are made in the context of the mission statement of the AASD and the Guiding Principles of Appleton Community 4K, and will include consideration of current research and established best practices. Children enrolled in Appleton Community 4K attend for one year. A grade level retention may be considered if a child demonstrates a lack of progress in completing the board-adopted 4K curriculum, based on observation and progress monitoring data. AASD Procedures for 4K Retention