https://www.uscaacademy.com/al....l-you-need-to-know-a
All You Need to Know About OUAC
The Ontario Universities Application Centre, or OUAC, is where students who want to go to universities in Ontario can fill out their applications in one place for free. Every university decides who to let in, and OUAC handles the application process. After candidates complete their applications on the OUAC, they are sent to the university they want to attend. When an application is received, the applicant gets an OUAC reference number that they can use when they talk to the OUAC or Ontario universities.