Forum:Duel Academy Location

Okay I have no idea where Duel Academy is. If its in the middle of the ocean or if its in the United tates. In the manga it states that is on a beautiful island in the southern sea but in the TV show jaden refers to it as Kansas but they are on an island and kansas is in the center of the country, and I know that there arent any lakes that big in kansas(much less volcanoes) so Im so confused.