Yes. Students who have not been properly immunized according to the Health and Safety Code will be excluded from attending school (California Education Code Section 48216). To find immunization requirements, refer to Chapter 1 (commencing with Section 120325) of Part 2 of Division 105 of the Health and Safety Code.

Exceptions:
i. Documentation showing that immunization is unsafe to the student due to a current physical condition of the student, indicating the nature and duration of the condition
ii. Immunization is in conflict with personal beliefs. Parents in this position must sign an affidavit on the back of the child’s CSIR to receive this exemption. (See http://www.cdph.ca.gov/)