Yu Ming Charter School submitted a data breach notification to the California Attorney General in November 2026 regarding an unauthorized security incident involving its testing vendor, Educational Testing Service. According to the disclosure, student records were accessed and copied from a file transfer site between May 22, 2026, and September 18, 2026. The filing was officially recorded under report number SB24-632412.
The compromised records included student names, dates of birth, home addresses, school and district details, student identification numbers, demographic data, disability information, program eligibility records, and educational assessment scores. The notice indicated that Social Security numbers and financial account details were not involved in the incident. The total number of impacted students has not been publicly confirmed in state regulatory filings.
Additional information may become available as reviews continue. Formal notification letters were submitted to regulators and issued to affected families following the discovery and investigation of the incident.