How can I organize a year-long exchange to Germany? [closed]

I am an eleventh-grade male Canadian high school student. Over the past couple of years, I have found myself very interested in the German language and culture. Recently, in my spare time, I have taken to studying the German language and researching German culture as my primary hobby. More than anything, after I graduate from high school in the summer of 2017, I would like to organize a one-year exchange to a High German-speaking region of Germany. I'm extremely motivated to immerse myself completely in the language and culture of Germany, and feel as though living as a German with a German host family for a year is the best way to achieve this.

I've contacted the Rotary Youth Exchange program in my region to see it would be possible to take part in a youth exchange where I would enrol in a German school to essentially repeat my graduating year of high school. I've been informed, however, that this program is only available to students who have not yet graduated from high school. Due to my current commitments to academics and band, I feel as though missing my final year of high school is not an option. This has led me to seek an alternative way to live in Germany in my post-graduation year before carrying on with my academic career.

In essence, I am motivated to find a way to live with a host family and put myself in a setting where I am exposed to as little English as possible. One of the drawbacks of the Rotary Exchange idea is there are frequent group meetings where many other foreigners speak English as a lingua franca. The idea of having an English-speaking community to fall back on is unappealing to me, as I wish to pursue the study of the language while being immersed in it.

Is there a way that I may be able to pursue such an exchange before I launch into my university career and inevitably settle down and stop dreaming on this scale? I'm open to any ideas that will put me into a situation where I am speaking German on a daily basis. Such an experience, I believe, will massively broaden my horizons and open up opportunities for me that presently I cannot even dream of.

Thanks in advance - I am open to and appreciative of any advice you may be able to give me.

Additional information: I am a Canadian-American dual citizen, so exchange programs that serve American students are not out of the question.