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.

Get all the news you need in your inbox each morning. PowerSchool said on Dec. 28, it became aware of a "potential cybersecurity incident" that involved unauthorized access to certain PowerSchool SIS information.

The "student information system" of one of the nation's biggest education company's was targeted by hackers, school officials said.