Skip to main content
California Department of Education Logo

Proposition 227

Five-year report on the effects of Proposition 227 implementation.
Effects of the Implementation of Proposition 227 on the Education of English Learners K-12

In 2000, the California Department of Education (CDE) contracted with the American Institutes for Research (AIR) and WestEd to conduct a five-year evaluation of the effects of Proposition 227 on the education of English learners (ELs).  Student achievement analyses, phone interviews, case study site visits, and written surveys were used to examine such questions as how the proposition was implemented, which EL services are most and least effective, and what unintended consequences resulted from Proposition 227 implementation. This final report was submitted to the CDE, Language Policy and Leadership Office on January 2006.

The report is available on the following Web sites: American Institutes for Research External link opens in new window or tab. and WestEd External link opens in new window or tab..

Executive Summary
Executive Summary of final report for Proposition 227.

Questions:   Language Policy and Leadership Office | 916-319-851
Last Reviewed: Tuesday, June 03, 2025
Recently Posted in Multilingual Learners
  • Geo-Regional Experts for Multilingual Students (added 21-Nov-2025)
    Information about and resources regarding the regional English learner lead agencies, pursuant to California Education Code Section 52073.4. Selected agencies are recognized under the title of Geo-Regional Experts for Multilingual Students (GEMS).
  • RELS Executive Summary (Statutes of 2024) (added 19-Nov-2025)
    Regional County Office of Education Regional English Learner Specialists Program Legislative Executive Summary 2024 Legislative Report.
  • Title III EL & Immigrant Program Allocations 24-25 (added 27-Oct-2025)
    This page contains a directory of local educational agencies (LEAs), both direct-funded and consortia, that are receiving English Learner (EL) and/or Immigrant student program funding during fiscal year (FY) 2024–25.
  • SSB Less Commonly Awarded Languages, 2024-25 (added 07-Oct-2025)
    Districts Awarding the State Seal of Biliteracy (SSB) in Less Commonly Awarded Languages for 2024-25.