Wis. Stat. § 119.73: Kindergarten programs.

The board shall evaluate the effectiveness of the expanded 5-year-old kindergarten programs under s. 119.71 in meeting the needs of disadvantaged children. Annually by January 1, the board shall submit a report summarizing its findings to the state superintendent and to the chief clerk of each house of the legislature for distribution to the appropriate standing committees under s. 13.172 (3).