On March 14, 2025, Substitute Teacher Service, Inc. (“STS”) filed a notice of data breach with the Attorney General of Massachusetts after discovering that an unauthorized party was able to access information that had been provided to the company. In this notice, STS explains that the incident resulted in an unauthorized party being able to access consumers’ sensitive information, which includes their names, Social Security numbers, financial account information, and driver’s license numbers. Upon completing its investigation, Substitute Teacher Service began sending out data breach notification letters to all individuals whose information was affected by the recent data security incident.
If you received a data breach notification from Substitute Teacher Service, Inc., it is essential you understand what is at risk and what you can do about it. A data breach lawyer can help you learn more about how to protect yourself from becoming a victim of fraud or identity theft, as well as discuss your legal options following the Substitute Teacher Service data breach. For more information, please see our recent piece on the topic here.
What Caused the Substitute Teacher Service Data Breach?
The Substitute Teacher Service data breach was only recently announced, and more information is expected in the near future. However, Substitute Teacher Service’s filing with the Attorney General of Massachusetts provides some important information on what led up to the breach and the company doesn’t appear to have issued a press release or posted a website notice discussing the incident.
However, according to the available information, we know that STS recently completed an investigation into a data security incident, ultimately confirming that certain information that had been provided to the company was subject to unauthorized access. While this may have been the result of a cyberattack against Substitute Teacher Service, it’s also possible that Substitute Teacher Service is reporting a third-party data breach that occurred at one of the company’s vendors or partners.
Either way, after learning that sensitive consumer data was accessible to an unauthorized party, Substitute Teacher Service reviewed the compromised files to determine what information was leaked and which consumers were impacted. While the breached information varies depending on the individual, it may include your name, Social Security number, financial account information, and driver’s license number.
On March 14, 2025, Substitute Teacher Service sent out data breach letters to anyone who was affected by the recent data security incident. These letters should provide victims with a list of what information belonging to them was compromised.
More Information About Substitute Teacher Service, Inc.
Substitute Teacher Service, Inc. is an educational staffing company specializing in providing substitute teachers, paraprofessionals, and support staff to school districts. Headquartered in Aston, Pennsylvania, the company partners with schools to offer reliable and qualified personnel for short-term and long-term assignments, ensuring continuity in student education. With a focus on quality staffing solutions, Substitute Teacher Service streamlines the hiring and placement process, helping schools maintain instructional excellence while offering flexible employment opportunities for educators. The organization employs approximately 1,314 people and generates an estimated $550 million in annual revenue.
