While enrolled in an academic period, you are considered a student for T2202 purposes. You are not considered a student for T2202 purposes during your co-op work term placement (unless you are enrolled in a course or courses during that time) and the Canada Revenue Agency requires that Sheridan College reports "0" months on your T2202 tax form. For more information, see the Canada Revenue Agency Students and Income Tax Guide.
Additional information
In depth questions related to taxes and the T2202 form should be directed to the Canada Revenue Agency.