Riverdale Joint Unified School District notified parents and staff that a third-party vendor, Tulare County Office of Education (TCOE), inadvertently distributed student and staff PII via email to unauthorized recipients. The data included names, emails, phone numbers, dates of birth, and grades. No SSNs or financial data were exposed. The incident was discovered on March 20, 2025, following an occurrence on March 18, 2025.