State law requires school districts in Connecticut to notify parents and staff of a data breach within 48 hours. However, PowerSchool didn't notify districts in the state of the Dec. 28 attack until Tuesday and Wednesday of this week, school officials have said.

CT school districts, including Milford, Wallingford, Danbury, East Hartford and Region 16, are notifying parents about the PowerSchool cybersecurity breach.

A number of schools in Connecticut have been affected by a widespread cybersecurity breach involving the PowerSchool Student Information System used by districts across the country and internationally.