Sonoma County Office of Education

English Learner Services


This page provides information on the California English Language Development Test (CELDT) and related resources.

CELDT Analysis

Districts can obtain the results of the annual administration of the CELDT from Educational Data Systems in late December/early January. (CDs with student data are no longer sent to districts, except by special request.)

To help schools use their electronic CELDT data, SCOE offers free workshops and consultation services. These services include conversion of the CELDT data file to a more user-friendly Microsoft Excel format and training to enable districts to use Microsoft Excel as a tool to analyze, sort, and filter the data so that it helps reveal student needs.

For assistance converting district data to Microsoft Excel, contact Rick Phelan, or 524-2847. Note that data conversion must be requested at the district level, not by individual schools or classrooms.

Background Information
The September 2009 issue of the SCOE Bulletin highlighted the use of student data, including results from the CELDT, to guide instructional decision-making. Review this issue (pdf) for a general overview of the benefits of data-driven decision-making in education.

The Bulletin was accompanied by a series of videos, one of which focused on the CELDT. Watch this video to learn more about the CELDT data files.


Video: By analyzing CELDT data using Microsoft Excel, educators can see how their English learners are progressing in language proficiency and academic achievement.


Resource Files & Guides

CELDT Discussion Guide
This discussion guide (pdf) is for site leadership teams that are examining data from the electronic CELDT file and the worksheets provided by SCOE data specialists.

English Language Learner Development Chart
SCOE developed this EL Development Chart (pdf) to outline sample minimum expectations for English learner progress as they relate to language proficiency measured by the CELDT and English-Language Arts achievement as measured by the CST. Intervention considerations and sample competencies are also summarized.

CELDT Interpretation Guides
CELDT Test Results Interpretation Guides are created by the California Department of Education to provide general information about the CELDT, how the results are reported, and what they mean.

CELDT Scaled Score Ranges
The California Department of Education provides this chart of Scaled Score Ranges as part of its online resources related to the CELDT.


  • Jenn Guerrero, Coordinator, EL Services
    (707) 524-2852,
  • Rick Phelan, Director, Technology for Learners
    (707) 524-2847,