republic-os/legislation/us/states/co/2024a/hb-24-1446.md

---
type: "Bill"
title: "Professional Development for Science Teachers"
description: "The act requires the department of education to develop and offer a free, optional professional development program (program) to enhance pedagogy around research-based Colorado academic standards in science. The program must include opportunities for in-person and virtual instruction on interventions for students who are below grade level or struggling in science, children with disabilities, gifted students, and students who are English language learners. The program must create incentives for teacher participation by offering ongoing professional development credit toward licensure renewal. The program prioritizes professional development for eligible science teachers employed at local education providers in rural school districts and small rural school districts."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2024A"
identifier: "HB 24-1446"
citation: "Colorado HB 24-1446 (2024A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Anthony Hartsook", "Barbara McLachlan", "Byron Pelton", "Janet Buckner"]
version_count: 10
action_count: 14
vote_count: 2
first_action: "2024-04-09T06:00:00+00:00"
last_action: "2024-05-23T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/9969e278-7c06-4b5d-b305-7148fdd377e8"
source_url: "https://leg.colorado.gov/bills/hb24-1446"
source_hash: "7032b6257ed702cfda8bda04451e8c9459753d1d408c4de5046d1a49fd73f646"
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-co"]
---

# Colorado HB 24-1446 (2024A) — Professional Development for Science Teachers

The act requires the department of education to develop and offer a free, optional professional development program (program) to enhance pedagogy around research-based Colorado academic standards in science. The program must include opportunities for in-person and virtual instruction on interventions for students who are below grade level or struggling in science, children with disabilities, gifted students, and students who are English language learners. The program must create incentives for teacher participation by offering ongoing professional development credit toward licensure renewal. The program prioritizes professional development for eligible science teachers employed at local education providers in rural school districts and small rural school districts.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2024a_hb1446_s_app_003.pdf)
2. **Engrossed (04/25/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_eng.pdf)
3. **Final Act (05/10/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_enr.pdf)
4. **Introduced (04/09/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_01.pdf)
5. **PA1 (04/22/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_h_ed_01.pdf)
6. **PA2 (04/25/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_h_ed_app_01.pdf)
7. **Reengrossed (04/26/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_ren.pdf)
8. **Rerevised (05/04/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_rer.pdf)
9. **Revised (05/03/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1446_rev.pdf)
10. **Signed Act (05/23/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2024a_1446_signed.pdf)

## Votes

- BILL — **29–2** (pass) · upper
- BILL — **57–6** (pass) · lower

## Sponsors

- Anthony Hartsook — primary (person)
- Barbara McLachlan — primary (person)
- Byron Pelton — primary (person)
- Janet Buckner — primary (person)

## Timeline

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

- **2024-05-23T06:00:00+00:00** Governor Signed `executive-signature`
- **2024-05-10T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2024-05-10T06:00:00+00:00** Signed by the President of the Senate
- **2024-05-10T06:00:00+00:00** Signed by the Speaker of the House
- **2024-05-04T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2024-05-03T06:00:00+00:00** Senate Second Reading Special Order - Passed - No Amendments
- **2024-05-03T06:00:00+00:00** Senate Committee on Appropriations Refer Unamended - Consent Calendar to Senate Committee of the Whole `committee-passage`
- **2024-05-01T06:00:00+00:00** Senate Committee on Education Refer Unamended to Appropriations `referral-committee`
- **2024-04-29T06:00:00+00:00** Introduced In Senate - Assigned to Education `introduction`
- **2024-04-26T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2024-04-25T06:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Committee
- **2024-04-25T06:00:00+00:00** House Committee on Appropriations Refer Amended to House Committee of the Whole `committee-passage, referral-committee`
- **2024-04-18T06:00:00+00:00** House Committee on Education Refer Amended to Appropriations `referral-committee`
- **2024-04-09T06:00:00+00:00** Introduced In House - Assigned to Education `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9969e278-7c06-4b5d-b305-7148fdd377e8`. Confidence: reported (aggregated from official Colorado legislature records).