---
type: "Bill"
title: "Maryland Longitudinal Data System - Definition of Student Data - Alteration"
description: "Maryland Longitudinal Data System - Definition of Student Data - Alteration"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2023"
identifier: "HB 320"
citation: "Maryland HB 320 (2023)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Guyton", "Kaiser"]
version_count: 3
action_count: 15
vote_count: 0
first_action: "2023-01-25"
last_action: "2023-05-16"
source: "openstates"
source_identifier: "ocd-bill/428585b6-2c1e-448a-b5f0-27783241e3b9"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0320?ys=2023RS&search=True"
source_hash: "5689c1d82bc5df0189560b2a005e78b64603678a121d3de3f92e88a88b751a56"
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-md"]
---

# Maryland HB 320 (2023) — Maryland Longitudinal Data System - Definition of Student Data - Alteration

## Version chain

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

1. **Chapter - Maryland Longitudinal Data System - Definition of Student Data - Alteration** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/Chapters_noln/CH_778_hb0320t.pdf)
2. **First - Maryland Longitudinal Data System - Definition of Student Data - Alteration** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/bills/hb/hb0320f.pdf)
3. **Third - Maryland Longitudinal Data System - Definition of Student Data - Alteration** (committee substitute) — [source](http://mgaleg.maryland.gov/2023RS/bills/hb/hb0320t.pdf)

## Sponsors

- Guyton — primary (person)
- Kaiser — primary (person)

## Timeline

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

- **2023-01-25** First Reading Ways and Means `referral-committee`
- **2023-01-25** Hearing 2/08 at 1:00 p.m.
- **2023-03-06** Favorable Report by Ways and Means `committee-passage-favorable`
- **2023-03-07** Favorable Adopted `committee-passage-favorable`
- **2023-03-07** Motion Special Order until 3/8 (Delegate Fisher) Adopted
- **2023-03-08** Second Reading Passed
- **2023-03-10** Third Reading Passed `passage`
- **2023-03-13** Referred Education, Energy, and the Environment `referral-committee`
- **2023-03-24** Hearing 4/04 at 1:00 p.m.
- **2023-04-10** Favorable Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2023-04-10** Favorable Adopted `committee-passage-favorable`
- **2023-04-10** Second Reading Passed
- **2023-04-10** Third Reading Passed `passage`
- **2023-04-10** Returned Passed
- **2023-05-16** Approved by the Governor - Chapter 778 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/428585b6-2c1e-448a-b5f0-27783241e3b9`. Confidence: reported (aggregated from official Maryland legislature records).