A study permit is a document that allows a foreign national to study at Designated Learning Institutions (DLI). A DLI is a school approved by a provincial or territorial government to host international students.
A study permit generally allows you to stay in Canada for the length of your study program, plus an extra 90 days. In this extra time either you prepare to leave Canada or apply to extend your stay.
Study Permit is not Required if
Work While Studying
While studying you are allowed to work for 20 hrs/week during academic session and full time during holidays if you are a full-time student at DLI (some exceptions), have a valid study permit and duration of the course is at least six months.