ALTA MESA / MONTEREY — October 30, 2026. Families connected with Monte Vista TK–8 School and other Monterey Peninsula Unified School District (MPUSD) campuses have been notified about a serious California student-data security incident involving Educational Testing Service (ETS), a contractor responsible for statewide assessments. In its October 24 community update, MPUSD said its own district systems were not involved, while encouraging parents to review the California Department of Education’s official notice and available identity-protection resources.
The breach is not unique to Monte Vista or the Monterey Peninsula. It affected an ETS-operated secure file transfer site serving statewide assessment programs. Neither the district’s update nor state notices establish that every child at Monte Vista had the same information copied; the records involved vary by student.
What happened and when?
The California Department of Education announced on October 16 that ETS had begun notifying families after investigators found unauthorized access and copying of student files from a secure transfer site. ETS discovered the unauthorized activity on September 25, 2026, took the affected site offline and worked with outside cybersecurity experts and law enforcement.
The state says notification began October 16 and was expected to continue through early November. Not receiving a notice in the first days therefore does not prove a student’s information was unaffected.
Which information might have been copied?
According to the state, affected files may include student names, Statewide Student Identifier (SSID), birthdays, residential addresses, demographic information, disability and program-participation records, and statewide assessment information. The precise combination is different from person to person.
The state specifically says Social Security numbers, financial account information, passwords, and parent or guardian personal information were not involved. These are important limits on the reported incident; a stolen student identifier is not the same as a stolen Social Security number.
What can families do today?
The California Department of Education says ETS is offering affected current and former students two years of complimentary Experian IdentityWorks protection. Families should use instructions and enrollment information in the state’s official incident information and the official ETS notice, rather than entering children’s identifying information into links from unexpected messages.
Parents can also consider appropriate identity-protection measures for minors and monitor school communications for additional updates. Keep the actual notice if one arrives, because it can identify what information was involved and how to obtain help. Families should be cautious about unsolicited texts or emails that use the breach as a pretext to demand payment or identity documents.
What does MPUSD’s notice say?
The district’s October 24 community update published on Monte Vista’s own school website states that the incident was at the statewide testing contractor and did not involve MPUSD’s systems. District families were directed to the full official notice and the resources available to people who may be affected.
For questions about a child’s enrollment or school communication, contact Monte Vista directly using the school’s published contact information. The school cannot necessarily confirm technical details of ETS’s incident investigation or enrollment in ETS-provided monitoring services.
Where to read original information
California Department of Education, October 16, 2026: ETS notification announcement; CDE: ETS incident notices and enrollment resources; MPUSD Community Updates, October 24, as posted by Monte Vista School.
Alta Mesa News public-service report, October 30, 2026. This article distinguishes statewide vendor access from district-network security and does not imply that the identity of any particular affected student is publicly known. Families should follow the state and ETS for individual notification and recovery instructions.
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