HB 4066 Michigan House · 2025-2026 Regular Session

Education: athletics; single-sex sports teams; require. Amends 1976 PA 451 (MCL 380.1 - 380.1852) by adding sec. 1290.

HB 4066 requires Michigan public schools to designate interscholastic athletic teams as "female," "male," or "coeducational" based on biological sex. It prohibits male students from participating in teams designated exclusively for females and protects schools from complaints or penalties for maintaining such single-sex teams. The law allows students or schools harmed by violations to seek legal remedies, including damages. It defines "sex" as biological sex listed on an individual's original birth certificate issued at or near birth. This bill directly affects public school districts, students, and athletic associations in Michigan.

Issues: ✗ Education

Bill status passed both 4 of 5 stages cleared

Introduction

Feb 2025

Committee Review

May 2025

House Passage

May 2025

Senate Passage

May 2025

Governor

Introduced Feb 11, 2025 Last action May 29, 2025

Maddy AI version diff · 2 comparisons

What changed between versions

As Passed by the House → Substitute (H-1) · 1 edit

MINOR

The bill text shows only formatting and metadata changes between the House-passed version and the substitute version. No substantive policy changes, funding amounts, eligibility criteria, or legal requirements were modified. The differences are limited to document headers, page numbers, and printer identifiers.

TECHNICAL

Document metadata and page numbering were updated to reflect the substitute version, including changes to printer identifiers from 'trvawk' to 'touscd'.

Floor votes · House May 22, 2025

How they voted

This bill passed the Senate by voice vote (no roll call recorded).

Full legislative history

Actions timeline

Total actions

Key actions

Committee

May 29, 2025

Committee

REFERRED TO COMMITTEE ON GOVERNMENT OPERATIONS

upper

May 29, 2025

Upper · Passed

PASSED BY HOUSE WITH IMMEDIATE EFFECT

upper

May 22, 2025

Lower · Passed

passed; given immediate effect Roll Call #131 Yeas 58 Nays 46 Excused 0 Not Voting 6

lower

May 21, 2025

Lower · Passed

substitute (H-1) adopted

lower

May 15, 2025

Committee

referred to second reading

lower

May 15, 2025

Lower · Passed

reported with recommendation with substitute (H-1)

lower

Feb 11, 2025

Committee

referred to Committee on Government Operations

lower

Feb 11, 2025

Introduced

introduced by Representative Rep. Jason Woolford

lower

1 primary · 29 co-sponsors