As correctly stated by anaqi, you need to choose a better course. Since you already have a masters, the only course the CIC could approve, according to me, is PhD. And yes, If you have a valid study permit, your husband can get an open work permit and your kids can get study permits dependant on you. However, please note that your husbands permit will be valid only as long as your study permit is and you would need to show additional finances for each family member. Also I strongly feel that applying for the entire family at the same time is like a sure shot way to get denied. You need to understand that as a student, CHC views you as a temporary resident and if you try to bring all your family over, they would surely doubt your ties to home country. I suggest you first get your permit done and then think of a way your husband and kids can apply.
