NEWS

California Warns All Public School Students of Data Stolen in Contractor Breach

Assessment contractor ETS lost student data via an SFTP site between May 22 and September 18, 2026. California is notifying families of 5.7M+ students.

Dylan H.

News Desk

October 20, 2026
2 min read
California Warns All Public School Students of Data Stolen in Contractor Breach

ETS Breach Exposes California Student Records

The California Department of Education (CDE) is warning students and families that assessment contractor Educational Testing Service (ETS) suffered a months-long data breach. Attackers copied files from a secure file transfer (SFTP) site between May 22 and September 18, 2026. ETS discovered the breach on September 25, disabled the compromised account, took the site offline and built a new platform. No group has claimed responsibility.


Data Exposed

  • Names, dates of birth, home addresses, schools, districts and grade levels
  • Statewide and local student identifiers
  • Gender, race or ethnicity, primary language, country of origin and English learner status
  • Disability and Section 504 status, testing accommodations and primary disability type
  • Eligibility for Title I, McKinney-Vento and Military Connected Student programs
  • Statewide assessment registration, participation and results

Scope

More than 5.7 million students enrolled in California public K-12 schools in the 2025 school year are covered. Affected people include current and former students enrolled from 2023 onward, plus students who left a California school since 2006 without confirming a transfer to another school with CDE. ETS runs the CAASPP and ELPAC assessments.


Response

  • Family notifications began October 16 and will continue through November.
  • CDE is working with state cybersecurity experts and reviewing ETS's compliance with data security and contractual obligations.
  • ETS says its web monitoring has found no evidence the data was published.
  • ETS paused certain testing and halted normal enrollment data processing while it assesses its systems.

Takeaways

The attacker had access for nearly four months before detection, a reminder that vendor file-transfer sites need monitoring, credential rotation and tight access scoping. Families who receive a notice should watch for phishing that references school details and consider credit monitoring for older students.

Source: The Record.