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Bills · 2025-2026 Regular Session

AB 100

Vetoed Official bill text Atom feed

Relating to: designating athletic sports and teams operated or sponsored by public schools or private schools participating in a parental choice program based on the sex of the participants.

Parochial and private schools School — Attendance School — Charter school School — Consolidation or reorganization School — Health program

  1. Introduced, completed
  2. Passes Assembly, completed
  3. Passes Senate, stopped here
  4. Governor signs, not reached
  5. Law, not reached

Unfamiliar terms? Glossary

What this bill does

Plain-language analysis by the nonpartisan Legislative Reference Bureau

This bill requires each school board, independent charter school, and private school participating in a parental choice program (educational institution) that operates or sponsors an interscholastic, intramural, or club athletic team or sport to designate the athletic team or sport based on the sex of the participating pupils. The bill defines “sex” as the sex determined at birth by a physician and reflected on the birth certificate. The bill also requires an educational institution to prohibit a male pupil from 1) participating on an athletic team or in an athletic sport designated for females and 2) using a locker room designated for females. Finally, the bill requires the educational institution to notify pupils and parents if an educational institution intends to change a designation for an athletic team or sport.

Sponsors

Introduced by: Allen (R) , Armstrong (R) , B. Jacobson (R) , Behnke (R) , Brooks (R) , Callahan (R) , Dittrich (R) , Donovan (R) , Duchow (R) , Goeben (R) , Green (R) , Gundrum (R) , Gustafson (R) , Knodl (R) , Kreibich (R) , Krug (R) , Maxey (R) , Moses (R) , Murphy (R) , Mursau (R) , Nedweski (R) , O'Connor (R) , Penterman (R) , Piwowarczyk (R) , Sortwell (R) , Steffen (R) , Tusler (R) , VanderMeer (R) , Wichgers (R)

10 cosponsors

Felzkowski (R) , Feyen (R) , Hutton (R) , Jacque (R) , Kapenga (R) , Nass (R) , Quinn (R) , Testin (R) , Tomczyk (R) , Wanggaard (R)

Registered lobbying interests · 17

Organizations that registered lobbying activity on this bill with the Wisconsin Ethics Commission. Registration means interest, not a position for or against. Official record

Votes

Assembly: Report Assembly Amendment 1 adoption recommended by Committee on Education, Ayes 7, Noes 4

Passed 7–4 Mar 13, 2025 official source full page

No individual roll call was recorded for this vote. Committee votes and some older sessions record totals only.

Assembly: Report passage as amended recommended by Committee on Education, Ayes 7, Noes 4

Passed 7–4 Mar 13, 2025 official source full page

No individual roll call was recorded for this vote. Committee votes and some older sessions record totals only.

Assembly: PASSAGE

Passed 51–43 Mar 20, 2025 official source full page

Aye · 51

Nay · 43

Senate: Report concurrence recommended by Committee on Government Operations, Labor and Economic Development, Ayes 3, Noes 2

Passed 3–2 Jan 16, 2026 official source full page

No individual roll call was recorded for this vote. Committee votes and some older sessions record totals only.

Senate: CONCURRENCE

Passed 18–15 Feb 11, 2026 official source full page

Full history

  1. Mar 3, 2025 · Assembly

    Introduced by Representatives Dittrich, Knodl, Allen, Armstrong, Behnke, Brooks, Callahan, Donovan, Duchow, Goeben, Green, Gundrum, Gustafson, B. Jacobson, Kreibich, Krug, Maxey, Moses, Murphy, Mursau, Nedweski, O'Connor, Penterman, Piwowarczyk, Sortwell, Steffen, Tusler, VanderMeer and Wichgers; cosponsored by Senators Hutton, Felzkowski, Feyen, Jacque, Kapenga, Nass, Quinn, Testin, Tomczyk and Wanggaard

  2. Mar 3, 2025 · Assembly

    Read first time and referred to Committee on Education

  3. Mar 6, 2025 · Assembly

    Public hearing held

  4. Mar 11, 2025 · Assembly

    Assembly Amendment 1 offered by Representative Dittrich

  5. Mar 13, 2025 · Assembly

    Executive action taken

  6. Mar 13, 2025 · Assembly

    Report Assembly Amendment 1 adoption recommended by Committee on Education, Ayes 7, Noes 4

  7. Mar 13, 2025 · Assembly

    Report passage as amended recommended by Committee on Education, Ayes 7, Noes 4

  8. Mar 13, 2025 · Assembly

    Referred to committee on Rules

  9. Mar 18, 2025 · Assembly

    Placed on calendar 3-20-2025 by Committee on Rules

  10. Mar 20, 2025 · Assembly

    Assembly Amendment 1 adopted

  11. Mar 20, 2025 · Assembly

    Ordered to a third reading

  12. Mar 20, 2025 · Assembly

    Rules suspended

  13. Mar 20, 2025 · Assembly

    Read a third time and passed, Ayes 51, Noes 43

  14. Mar 20, 2025 · Assembly

    Ordered immediately messaged

  15. Mar 20, 2025 · Senate

    Received from Assembly

  16. Mar 20, 2025 · Assembly

    Read a second time

  17. Mar 21, 2025 · Senate

    Read first time and referred to committee on Government Operations, Labor and Economic Development

  18. Jan 14, 2026 · Senate

    Public hearing held

  19. Jan 16, 2026 · Senate

    Executive action taken

  20. Jan 16, 2026 · Senate

    Report concurrence recommended by Committee on Government Operations, Labor and Economic Development, Ayes 3, Noes 2

  21. Jan 16, 2026 · Senate

    Available for scheduling

  22. Feb 9, 2026 · Senate

    Placed on calendar 2-11-2026 pursuant to Senate Rule 18(1)

  23. Feb 11, 2026 · Senate

    Read a second time

  24. Feb 11, 2026 · Senate

    Ordered to a third reading

  25. Feb 11, 2026 · Senate

    Rules suspended to give bill its third reading

  26. Feb 11, 2026 · Senate

    Read a third time and concurred in, Ayes 18, Noes 15

  27. Feb 11, 2026 · Senate

    Ordered immediately messaged

  28. Feb 12, 2026 · Assembly

    Received from Senate concurred in

  29. Feb 19, 2026 · Assembly

    LRB correction (Assembly Amendment 1)

  30. Feb 19, 2026 · Assembly

    Report correctly enrolled on 2-19-2026

  31. Mar 26, 2026 · Assembly

    Presented to the Governor on 3-26-2026

  32. Mar 31, 2026 · Assembly

    Report vetoed by the Governor on 3-31-2026

  33. May 12, 2026 · Assembly

    Placed on calendar 5-12-2026 pursuant to Joint Rule 82 (2)(a)

  34. May 13, 2026 · Assembly

    Failed to pass notwithstanding the objections of the Governor pursuant to Joint Rule 82