Wisconsin Public School Observance Day, marking the anniversary of Earth Day (April 22, 1970) and urging schools to conduct programs across subject areas to enhance students' understanding of the environment and to promote an ethic of environmental stewardship. According to statute (Wis. Stat. sec. 118.02), when an observance day falls on a Saturday or Sunday, it should be observed on the preceding Friday or the following Monday.
Enacted May 23, 1990, from the 1989 Laws of Wisconsin, Act 146.
More information and educational resources are available on the Department of Public Instruction Social Studies Education Observance Days website.