PowerSchool, a popular online portal used by many New York school districts to manage student registration, grading, attendance and more, was hit by a data breach in December that saw the unauthorized release of some student information.

PowerSchool, a software provider popular at K-12 schools, was the target of a data breach in late December that affected many districts in the U.S. and in other countries, according to the company and several impacted schools.

A worldwide cyber security breach is impacting several local school districts. PowerSchool is a cloud-based software provider that allows parents to track students’ grades, schedules, assignments and absences through an app.