Parents and educators are receiving notifications about the breach, but it’s still unclear exactly how many people have been affected or what information was leaked.

Westerville City Schools confirmed personal student info was accessed in PowerSchool breach. Unclear if several more central Ohio districts affected.

The breach is the latest in a series of high-profile cybersecurity incidents affecting K-12 schools, which are a top target of hackers and are uniquely vulnerable to cyberattacks.