Wisconsin Statutes Schools (Ch. 115 to 121) § 118.14. Age of pupils; phase in of 4-year-old kindergarten

(a) No child may be admitted to a 4-year-old kindergarten unless he or she is 4 years old on or before September 1 in the year that he or she proposes to enter school.

(b) No child may be admitted to a 5-year-old kindergarten unless he or she is 5 years old on or before September 1 in the year he or she proposes to enter school.

(c) No child may be admitted to the 1st grade unless he or she is 6 years old, on or before September 1 in the year he or she proposes to enter school.

(3)(a) Except as provided in par. (b), if a school board establishes a 4-year-old kindergarten program, the program shall be available to all pupils eligible for the program under sub. (1)(a) or s. 120.12(25).

(b) A school board that was operating a 4-year-old kindergarten program in the 2007-08 school year that did not comply with par. (a) shall make a 4-year-old kindergarten program available to all pupils eligible for the program under sub. (1)(a) or s. 120.12(25) by the beginning of the 2013-14 school year.