Percentage of School Districts' Shared Costs Aided by State Equalization Aid Formula 2023-24 2022-23 2021-22 2020-21 2019-20 2018-19 2017-18 2016-17 2015-16 2014-15 2013-14 2012-13 2011-12 2010-11 2009-10 2008-09 2007-08 2006-07 For questions about this information, contact dpifin@dpi.wi.gov (608) 267-9114