Please help me make this sound natural and professional

1. article

2. s/v agreement and register

3.not exactly true

4. s/v agreement and mixed tenses

5. comma and prepositions

6. s/v agreement and not proven

Please help me make this sound natural and professional

It's nice to correct some text re: Maths as the subject.  I have a maths degree and this brings back a few memories.

Based on the 2015 PISA report 2015, the Canadian educational system is ranked among the best in the world. The Canadian top-ranked universities and the  international conferences which are frequently held over there means Canada has access to the most brilliant mathematical minds in the world, due to its top-ranked universities and its frequently held international conferences. The sophisticated educational system values creative minds and provides the right conditions for young mathematicians to flourish. Also Moreover, Canada is a multicultural society and Canadian universities accept students from all over the world. In a multicultural society, Due to Canada's diversity, I would  will be able to enjoy learning from people and students with different backgrounds which mean to me who have new and interesting perspectives, and to contribute my own experience as a foreign student as well. So a After my graduation, I stand a good chance to be highly qualified at my subject. Also In addition, I am interested in learning languages, and four years of living in Quebec is an incredible opportunity to learn French and master English.

Comment: I hope this is helpful! For the most part, I made stylistic changes to make the paragraph sound more natural. Unfortunately, I do not understand what this sentence means within the context of the paragraph: "So after my graduation, I stand a good chance to be highly qualified at my subject." To be clear, I believe I understand the meaning -- you are saying you believe you will succeed in your academic program -- but it seems like a non sequitur, disconnected from the rest of the sentences in the paragraph. I think this issue can be solved by adding more detail to this sentence or adding another sentence or two on this topic to make the point clearly.