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California English Language Development Test (CELDT)

California state law requires school districts to test all students who have a home language other than English. This test is called the California English Language Development Test or CELDT. The purpose of the CELDT is to identify new students who are English learners, determine their level of English proficiency, and annually assess the progress of students in learning English who are identified as English Learners.

The CELDT has three purposes:

  1. To identify students who are English Learners.
  2. To determine the level of English language proficiency of students who are English Learners.
  3. To assess the progress of English Learners in acquiring the skills of listening, speaking, reading, and writing in English.

The CELDT is given at the beginning of the school year to all students who have previously been identified as English Learners.  New students who have a home language other than English take the CELDT within 30 days of their enrollment in the San Mateo Union High School District.  Parents are sent a written report with the testing results in February of each year.


If your student is new to California and lives within the San Mateo Union High School District, the parent or legal guardian must first enroll the student at:

Attendance and Welfare Office
640 North Delaware Street
San Mateo, CA  94401

  • You will be given a Snapcode to complete the registration process online through InfoSnap.
  • If the Home Language Survey (part of the InfoSnap registration process) indicates that there is a language spoken in the home other than English, the student will be required to take the CELDT.
  • After the registration process is complete, you will be contacted to set up an appointment for your student to take the test.

Students will be signed up on a first-come, first-served basis.  Therefore, it is important that you provide Attendance and Welfare your current phone number or an alternate contact person and phone number so they may reach you.

Once the student's English proficiency level is determined, Attendance and Welfare will place the student into one of our high schools.  This process could take up to one week from the test date.  Attendance and Welfare or the school of assignment will inform you of placement.  Make sure your child has a counseling appointment with that high school to set up their class schedule.


For more information please contact:
Brian Simmons, Director of Curriculum & Assessment
Email: bsimmons@smuhsd.org
Phone: (650) 558-2212


Araceli Guizar, District Testing Assistant
Email: aguizar@smuhsd.org
Phone: (650) 558-2231