---
type: "Bill"
title: "School safety: disruption threatening pupil's immediate physical safety."
description: "Existing law provides that a person who comes into any school building or upon any school ground, or adjacent street, sidewalk, or public way, whose presence or acts interfere with or disrupt a school activity, without lawful business, or who remains after having been asked to leave, as specified, is guilty of a misdemeanor. \"School\" is defined to mean any preschool or public or private school having kindergarten or any of grades 1 to 12, inclusive."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20112012"
identifier: "AB 123"
citation: "California AB 123 (20112012)"
classification: ["bill"]
subjects: ["School safety: disruption threatening pupil's immediate physical safety."]
status: "enacted"
primary_sponsors: ["Mendoza"]
version_count: 4
action_count: 17
vote_count: 5
first_action: "2011-01-10"
last_action: "2011-08-03"
source: "openstates"
source_identifier: "ocd-bill/9223fa4d-c4eb-48aa-b6c6-acc302bb8192"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB123"
source_hash: "e1b51d80a9865875563cfde75027024422a736a534507ab57c79845096fa8fa1"
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-ca"]
---

# California AB 123 (20112012) — School safety: disruption threatening pupil's immediate physical safety.

Existing law provides that a person who comes into any school building or upon any school ground, or adjacent street, sidewalk, or public way, whose presence or acts interfere with or disrupt a school activity, without lawful business, or who remains after having been asked to leave, as specified, is guilty of a misdemeanor. "School" is defined to mean any preschool or public or private school having kindergarten or any of grades 1 to 12, inclusive.

## Version chain

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

1. **01/10/11 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB123&version=20110AB12399INT)
2. **08/03/11 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB123&version=20110AB12397CHP)
3. **AB123** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB123)
4. **07/18/11 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB123&version=20110AB12398ENR)

## Votes

- 3rd Reading AB123 Mendoza By Wright — **30–7** (pass) · upper
- Do pass. — **11–1** (pass) · lower
- AB 123 MENDOZA Assembly Third Reading — **55–19** (pass) · lower
- Do pass, but re-refer to the Committee on Appropriations. — **5–1** (pass) · upper
- Do pass and be re-referred to the Committee on Appropriations. — **6–0** (pass) · lower

## Sponsors

- Mendoza — primary (person)

## Timeline

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

- **2011-01-10** Read first time. To print. `reading-1`
- **2011-01-11** From printer. May be heard in committee February 10.
- **2011-01-27** Referred to Com. on PUB. S. `referral-committee`
- **2011-03-15** From committee: Do pass and re-refer to Com. on APPR. (Ayes 6. Noes 0.) (March 15). Re-referred to Com. on APPR. `referral-committee, committee-passage, committee-passage-favorable`
- **2011-04-06** From committee: Do pass. (Ayes 11. Noes 1.) (April 6). `committee-passage, committee-passage-favorable`
- **2011-04-07** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2011-04-11** Read third time. Passed. Ordered to the Senate. (Ayes 55. Noes 19. Page 907.) `reading-3, reading-1, passage`
- **2011-04-11** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2011-04-25** Referred to Com. on PUB. S. `referral-committee`
- **2011-06-07** From committee: Do pass and re-refer to Com. on APPR. (Ayes 5. Noes 1.) (June 7). Re-referred to Com. on APPR. `referral-committee, committee-passage, committee-passage-favorable`
- **2011-06-27** From committee: Be placed on second reading file pursuant to Senate Rule 28.8. `committee-passage`
- **2011-06-28** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2011-07-14** Read third time. Passed. Ordered to the Assembly. (Ayes 30. Noes 7. Page 1852.). `reading-3, reading-1, passage`
- **2011-07-14** In Assembly. Ordered to Engrossing and Enrolling. `committee-passage`
- **2011-07-25** Enrolled and presented to the Governor at 1:30 p.m.
- **2011-08-03** Approved by the Governor. `executive-signature`
- **2011-08-03** Chaptered by Secretary of State - Chapter 161, Statutes of 2011.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9223fa4d-c4eb-48aa-b6c6-acc302bb8192`. Confidence: reported (aggregated from official California legislature records).