Although there are some exceptions to the rule, you will usually need to hold a study permit in order to study in Canada. Once you have been accepted in your desired course of study, you will need to fulfill immigration requirements before a permit is issued. A study permit can normally be obtained in a short amount of time, but it is wise to obtain it as soon as possible.
Family members of the foreign student will usually be able to obtain authorizations to accompany the student during his course of study in Canada: Spouses can obtain an open work permit, and children will receive the proper documentation in order to pursue their studies in Canada.
In many cases, minor children accompanying their parents in Canada (who are themselves workers, students or visitors) need to obtain a study permit in order to attend school during their stay in Canada.