I hate how my dad "encourages" me to learn

[Acrobat]

When I tell my dad I thought I failed a certain exam, he exploded. He told me that I'm not serious, I don't try enough. He told me that he and my mom make efforts so I can study. He had a long speech.
Why doesn't he realize he makes things worse? The time I use to listen to his speech is time I could use for learning. Not to mention it also takes time for me to calm down after said speech. 
Why does he tell me I don't try enough? I really try my best, I really do. There is a lot of work and I'm struggling to keep up with it. I also do have some emotional problems, which I didn't tell him or mom, but still. I have a lot of mood swings and when I'm feeling down It's hard for me to concentrate while learning. I figured out it would be best to take some time to calm down and then continue learning, but even then I lose some time. What should I do if I get mood swings during an exam? It never happened before. I have a therapy appointment, but it's only after the end of the semester and I still have 4 exams to go.
He also told me that one day he might get really pissed and make me change universities. And that if I don't learn might as well get a job. I don't know if he really means it, or just trying to scare me.
If I try to talk to him he won't listen.

I'm assuming your parents are paying for your school? If so it not hard to see why they're so invested in how you do, because nobody wants to pay for you to retake a course, etc.. Trying to find a balance between sympathy and frustration here for them is likely difficult.

I would suggest finding ways to make it more your financial burden than theirs, applying for student and private loans, grantsand scholarship, work study, etc..

That way the cost of your failures are carried more so by yourself than them.