You stated in your previous posts that the child was a dependent under the age of 21. You don't do yourself any favours providing incorrect information.Okay, thanks.
The reason I asked this was because I just heard that the kid has to go back to his/her home country to apply for a study permit.
P.S - The kid is 22 years old.
A 22 year old is not a dependent child. They do not qualify for any status based on you and do not qualify to change their status to student in Canada. They can apply online or to a VO in the US for a study permit. The chances of approval are less when the person is already in Canada.