可能であれば直接電話して I have sent an email asking about your courses a couple of weeks ago, but I haven’t received any response yet. Do you know anything about that? などと問い合わせてみて、それに対する電話対応で、 いい加減な学校かどうか判断してはいかがでしょう?
Take into account that this school is in Canada not in Japan and that the school might have not received your e-mail correctly or ON time.
Try to write them in ENGLISH, even if your English is not so good and give them at least one day to reply back.
Remember that Japan has a different time zone. I think there is a telephone number where you can call and ask for information and why don ’ t you call them?