The first thing you should probably do is proof read the thesis and make corrections. They are a number of grammatical errors and punctuation errors. Aside from this your thesis can be made a little stronger by lessening its claim. In other words, rather than saying that the 12 grade English course should only read Canadian literature, why don't you say that the 12 grade English course mainly focus on Canadian literature? You might get more people to agree with your thesis, if you soften the language a little. As it stands, the thesis seems a bit narrow. Finally, the weakest point is that you can encourage local and younger Canadian writers to write by studying any kind of literature.