Emailing

How big is the envelope supposed to be for mailing a final transcript to a college?

My dilemma is that I am a college freshman and have a chemistry Professor who is truly horrible at teaching. The entire class average is a 60. We try to ask questions in class and have him explain things, but he just laughs at us without answering. The tests never contain material that we are studying-always obscure stuff that is randomly taken from the back of the book; or outright trick questions designed to make you fail. He gives notes and tells us the test will be from this, but it never is. Now at the point of not being able to drop the class, he finally gives us our grades back. It took a mass emailing campaign to the department head to even get our first 2 test grades back to us to see how we are doing. We received them today and I failed both of them. Now I am sick because I must absolutely ace my next test and my final to even get out with the minimum grade. I have been studying and working with tutors and am studying 8 hours a day to prepare for the next tests and if I fail, I just feel like giving up altogether. I don’t know what to do. It’s not like I haven’t been trying. When I talk with others that have the same exact class, just different teachers, they are studying completely different material than my class. I am going to school on student loans so every class counts. To get into medical school I must make excellent grades or risk not being accepted. Don’t professors have some type of rules that they must follow and be accountable for their lack of proper teaching? I am more than willing to accept my own failings and lack of knowledge, but when does it become the responsibility of the professor to teach me?
I was told that this professor was removed from teaching another chemistry level class because of issues such as this. The department head is aware of his “teaching style” but apparently since he has tenure, they just let him continue…According to the rate my professor website, historically he states in his syllabus that he will drop lowest grade and then doesn’t. He has already said he won’t curve the grades, so I guess I am screwed….

i am doing an ad campaign for the royal mail for my project and i wanted to know how would i get the younger generation to get back into writing letters and not emailing.

I’m a college student and I will be presenting a report on an article about calendar anomalies in the stock market for my oral exam. Now my question is, would it be ok if I were to email the author(s) of my journal article? I mean, they provide it in the articles but would they entertain questions about it?

I’m really tempted to do that because I have one or two questions about their methods and my exam results depends on my passing my major. However, I’m also afraid that it would be impolite… My professors aren’t exactly helpful.