The Optometry Admission Test (OAT) contains material in biology, general chemistry, organic chemistry and physics, so prospective applicants are encouraged to complete as many of the science prerequisite courses as possible before taking the exam.
SCO accepts admissions applications approximately July 1-March 1 each year. All applicants are required to take the OAT no later than the March 1 application deadline; however, we strongly recommend submitting an application and taking the test early in the application cycle.
Sitting for the test during the summer a year before entering optometry school is encouraged because this could accelerate the processing of the application. For most students this will be the summer between their junior and senior years of their undergraduate education. It also allows enough time to retake the test if needed. For students taking the OAT more than one time, SCO uses the set of scores with the highest academic average, so there are no penalties for retaking.
Students may take the exam multiple times; however, the scores reported to SCO must be no more than two years old from the date the applicant submits the SCO supplemental application. Registration information for the OAT can be found here.