Sure you can do the course. Just don't think it is worthwhile coming to Canada to pursue the degree unless you have access to lots of funds. If you are considering moving to Canada and potentially applying to teachers college I would look at 5-10 universities to see what are the prerequisites. If you want to go to a Canadian teacher's college you would have to go to a uk university and not a college.
Thanks for your response I am coming from Africa not UK.
Am just worried about study permit if I do an undergraduate diploma when I already have a degree.
Also doing a graduate diploma would be a good advantage.
Most of the universities have checked pre requisite for masters are high.
I also considering staying in Canada after study as well.
If you know some universities pls recommend.
Look forward to hearing from you.
Thanks