BreachCensus

PowerSchool Group LLC

United States of America

PowerSchool Group LLC is an organisation in Massachusetts. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register and the Washington State Attorney General breach-notification register with 2 confirmed incidents (3 filings); the most recent notice was filed on January 28, 2025.

Data as of September 6, 2026.

Confirmed incident

Filed in MA, WA, CA and DE

The same incident was filed separately with 4 jurisdictions within a few days of each other (MA, WA, CA and DE) — shown here as one incident.

Disclosed
January 28, 2025

Timeline

  1. January 27, 2025
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  2. January 27, 2025
    Reported to regulator Regulator

    WA AG breach notification: 314,107 Washington residents affected

    source
  3. January 28, 2025
    Reported to regulator Regulator

    MA AG breach notification: 18,476 Massachusetts residents affected

    source
  4. January 29, 2025
    Reported to regulator Regulator

    DE AG breach notification: 707 Delaware residents affected

    source
What a Massachusetts notice means

Required under M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗

What a Washington notice means

Required under RCW 19.255.010. Notice to the Attorney General is required when a breach affects more than 500 Washington residents.

Note: the count is Washington residents only, not a total.

Washington breach-notification register ↗

What a California notice means

Required under Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

Confirmed incident

US-DE

Timeline

  1. Undated
    Reported to regulator Regulator

    DE AG breach notification: an unknown number of Delaware residents affected

    source