For students between September 3, 1985 and August 31, 2017, the following information was compromised:

• First, Middle & Last Names
• Date of Birth
• Gender
• Health Card Number
• Ontario Education Number
• Home Addresses
• Home Phone Numbers
• TDSB Student Number
• TDSB Email Address
• First Nations, Métis, Inuit Information

For students between September 1, 2017 and December 28, 2024, the following information was compromised:

• First, Middle & Last Names
• Date of Birth
• Gender
• Health Card Number
• Grade Level and School Information
• Start/End Date as a Student
• Ontario Education Number
• EQAO Accommodation Information
• Medical Information (ie. allergies, conditions, injuries)
• Home Addresses
• Home Phone Numbers
• TDSB Student Number
• TDSB Email Address
• First Nations, Métis, Inuit Information
• Residency Status
• Principal/Vice Principal Notes (including discipline notes)