---
type: "Bill"
title: "Education: school districts; letter grade system for ranking public schools; eliminate. Amends secs. 392, 502, 503, 507, 522, 528, 552 & 561 of 1976 PA 451 (MCL 380.392 et seq.) & repeals sec. 1280g of 1976 PA 451 (MCL 380.1280g)."
description: "Education: school districts; letter grade system for ranking public schools; eliminate. Amends secs. 392, 502, 503, 507, 522, 528, 552 & 561 of 1976 PA 451 (MCL 380.392 et seq.) & repeals sec. 1280g of 1976 PA 451 (MCL 380.1280g)."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2023-2024"
identifier: "HB 4166"
citation: "Michigan HB 4166 (2023-2024)"
classification: ["bill"]
subjects: ["Education: other", "Education: school districts", "State agencies (existing): education"]
status: "enacted"
primary_sponsors: ["Matt Koleszar"]
version_count: 7
action_count: 29
vote_count: 2
first_action: "2023-03-02"
last_action: "2023-05-23"
source: "openstates"
source_identifier: "ocd-bill/9638b2fa-06ff-4cb9-bf64-176bc6e9a0f3"
source_url: "https://legislature.mi.gov/Bills/Bill?ObjectName=2023-HB-4166"
source_hash: "42433c86cd45182737c24c5db2c836f47cd14fde67b4935bcd9c8c061c52723e"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mi"]
---

# Michigan HB 4166 (2023-2024) — Education: school districts; letter grade system for ranking public schools; eliminate. Amends secs. 392, 502, 503, 507, 522, 528, 552 & 561 of 1976 PA 451 (MCL 380.392 et seq.) & repeals sec. 1280g of 1976 PA 451 (MCL 380.1280g).

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **As Passed by the House** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/House/pdf/2023-HEBH-4166.pdf)
2. **As Passed by the Senate** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/House/pdf/2023-HEBS-4166.pdf)
3. **House Concurred Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billconcurred/House/pdf/2023-HCB-4166.pdf)
4. **House Introduced Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billintroduced/House/pdf/2023-HIB-4166.pdf)
5. **Public Act** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/publicact/pdf/2023-PA-0034.pdf)
6. **Substitute (H-1)** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-HCVBS-4166-0N295.pdf)
7. **Substitute (H-1) - 2** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-HCVBS-4166-0O338.pdf)

## Votes

- passed; given immediate effect Roll Call # 35 Yeas 63 Nays 45 Excused 0 Not Voting 2 — **63–45** (pass) · lower
- PASSED ROLL CALL # 145 YEAS 20 NAYS 18 EXCUSED 0 NOT VOTING 0 — **20–18** (pass) · upper

## Sponsors

- Matt Koleszar — primary (person)
- Amos O'Neal — cosponsor (person)
- Betsy Coffia — cosponsor (person)
- Cynthia Neeley — cosponsor (person)
- Helena Scott — cosponsor (person)
- Jason Morgan — cosponsor (person)
- Regina Weiss — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-03-02** introduced by Representative Matt Koleszar `introduction`
- **2023-03-02** read a first time `reading-1`
- **2023-03-02** referred to Committee on Education `referral-committee`
- **2023-03-07** bill electronically reproduced 03/02/2023
- **2023-03-21** reported with recommendation with substitute (H-1) `committee-passage`
- **2023-03-21** referred to second reading
- **2023-03-21** read a second time `reading-2`
- **2023-03-21** substitute (H-1) adopted
- **2023-03-21** placed on third reading
- **2023-03-21** placed on immediate passage
- **2023-03-21** read a third time `reading-3`
- **2023-03-21** passed; given immediate effect Roll Call # 35 Yeas 63 Nays 45 Excused 0 Not Voting 2 `passage`
- **2023-03-21** title amended
- **2023-03-21** transmitted
- **2023-03-22** REFERRED TO COMMITTEE ON EDUCATION `referral-committee`
- **2023-04-26** REPORTED FAVORABLY WITHOUT AMENDMENT `committee-passage`
- **2023-04-26** REFERRED TO COMMITTEE OF THE WHOLE `referral-committee`
- **2023-05-02** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITHOUT AMENDMENT(S) `committee-passage`
- **2023-05-02** PLACED ON ORDER OF THIRD READING
- **2023-05-03** AMENDMENT(S) DEFEATED `amendment-failure`
- **2023-05-03** PASSED ROLL CALL # 145 YEAS 20 NAYS 18 EXCUSED 0 NOT VOTING 0 `passage`
- **2023-05-03** INSERTED FULL TITLE
- **2023-05-03** full title agreed to
- **2023-05-03** returned from Senate without amendment with full title
- **2023-05-03** bill ordered enrolled
- **2023-05-11** presented to the Governor 05/11/2023 11:08 AM `executive-receipt`
- **2023-05-23** approved by the Governor 05/22/2023 01:50 PM `executive-signature`
- **2023-05-23** filed with Secretary of State 05/22/2023 04:50 PM
- **2023-05-23** assigned PA 34'23

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9638b2fa-06ff-4cb9-bf64-176bc6e9a0f3`. Confidence: reported (aggregated from official Michigan legislature records).