Hello! It's great you are reaching out, doing your research and have found a vet.
Parrots are great! They can be the most affectionate, loving companions. That being said, they are not for those who are generally not home much. You spend a lot of time at school, and then on weekends playing your spots. Your schedule is not ideal for owning a parrot. It isn't impossible, but you would have to dedicate much of your free-time you are home with your birds. That, on top of having homework every night, could create a big problem.
I myself work full-time (Mon-Fri) 8-5pm, and am home all weekend long. It works because they are bonded to each other, my life/schedule has not changed since I got them (I'm home every day for lunch to feed them, then again at 5pm -10pm to spend time with them) and I have the resources to give them the proper care they need.
I think having just one bird on your type of schedule would make it very lonely for most of the day. Birds live in flocks in the wild and don't like to be alone, ever. They like to be with their flock. I'm not encouraging you to get two, though. They may just end up rejecting you since you wouldn't be there much of the day and bond to each other.
You'll find that most members here are home quite a lot, have their own income to provide for the birds they own, have their own transportation for emergencies, and have all necessary resources to caring for the birds properly. Are you prepared to spend a good amount each month with food, toys and preparing their food?
Are you about 14? I'm going based off the grade you're in. At this age I was a lot like you too, was beginning to explore my love of animals, but at that age it just may be better to wait until you are living on your own, have your own income, own transportation. I owned a couple birds that ended up dying/had to rehome them because I was just ill-prepared to keep and care for them properly.
It's also important to have supportive parents when acquiring a new pet. Are your parents willing to take you and your bird to the vet? Do you have a source of income, or would they be paying for it?
Parrots do live a long time, with cockatiels living well past 15 years old. Are you planning on going to college someday? What happens to the birds then? Most dorms don't allow birds or pets at university. What about when you start dating and are gone spending time with your friends or significant other? Who would take care of the bird, then?
If you are still adamant about getting a parrot, I would recommend a cockatiel or budgie. They're small, easy to own and train and don't scream like the larger species tend to, but will make some noise and mess just like any other parrot. Hope that helps a little!