I've decided to attend UW Seattle. I initially applied for DA to BioE. I didn't get it, but I was in the top 10th percentile of my class, got in the 99th percentile on my ACT, internships with research experience, and basically had 12 hour school days. I'm pretty frustrated. It seems like all my hard work went in the trash. Now I'm afraid I won't be an amazing student at UW because most of my UW-bound peers got DA into their other engineering majors. I'm wondering if I should continue to pursue BioE at UW or opt for neurobiology (something I'm also very interested in). I feel like I could've easily gotten DA to neurobio, but I didn't apply. I regret it a lot. I know BioE is more challenging, but what's better? I feel like I could achieve a higher GPA in neurobio and maybe have more time to study for the MCAT, but I don't even know how that works. I have to find research experience too. My friend is donating her old MCAT books to me so I can figure out how this works. I'm also planning on getting work experience as a medical scribe this summer as opposed to an internship (I've been interning at top companies for the past two years). On top of that, I'm taking summer courses to get ahead on my coursework. I'm in full panic mode, in all honesty. I sit in calculus class and look around at all the people who got DA feeling like a failure.
It makes me wonder if the same thing will repeat in med school and whether I should just give up now or not. I want to stand out amongst my peers, how should I go about doing that?
Ok first, if you continue like this you will 100% burn out long before you can even get to medical school. You have GOT to find some balance in your life.
I'm also planning on getting work experience as a medical scribe this summer as opposed to an internship (I've been interning at top companies for the past two years). On top of that, I'm taking summer courses to get ahead on my coursework.
Don't do this. If you do decide to pursue medical school, you may not have any free summers left. You got into college, a competitive, high-achieving one, congrats! Take some time to appreciate that. Take the summer off, do something fun, and figure out what you really want to do. You're 17 or 18, and trust me, it all seems really overwhelming right now, but you have SO MUCH TIME to figure this stuff out. You don't need to rush into it all at once.
You're not a failure for not getting into DA BioE, in fact, you're clearly qualified to study whatever you want at one of the best schools in the country. Getting into medical school is not a sprint, and most of the time it's not even a straight line. Right now, not getting into DA BioE may seem like the end of the world, but it honestly might be a blessing in disguise; now you have the opportunity to give some thought to what interests you the most and what you might like to do for the rest of your life if medicine doesn't work out.
To answer your actual questions:
1. "I know BioE is more challenging but what's better?" -- you get literally 0 points for doing something thats more challenging. you get negative points for doing something more challenging and failing. Pick a major that you LIKE, something that you will genuinely enjoy, so that when you're stuck in the library at 3AM studying something you hate, at least you can look forward to the rest of the classes you do like.
2. "I feel like I could achieve a higher GPA in neurobio and maybe have more time to study for the MCAT, but I don't even know how that works." -- I dont think BioE and neurobio will be sufficiently different in difficulty to make a huge difference in your potential GPA; Engineering is notoriously grade deflating, neuro can be too. As for MCAT, you SHOULD NOT start studying for the MCAT as a freshman, it will be literally useless; you wont have any of the background knowledge and you cant take the MCAT that early anyway. Most people choose to take the MCAT in the spring/summer of their junior year (if applying directly) or senior year. Studying during the summer and taking it in the fall the year before you apply is a great choice too. When you get there, there's a whole MCAT forum with suggestions for study plans--3 months is typically enough. Until then: don't worry about it.
3. "It makes me wonder if the same thing will repeat in med school and whether I should just give up now or not. I want to stand out amongst my peers, how should I go about doing that?"-- You sound like a driven student, so I suspect you'll be perfectly fine in medical school. However, if you don't take things a little slower and find some balance, you're going to drive yourself insane and never get there. Luckily, the solution will also help you stand out amongst your peers!
FIND A HOBBY. There are SO MANY different clubs in college entirely devoted to just doing fun things--intramural sports, music, strange academic interest groups, board games, video games, crafts, ballroom dance, underwater basketweaving. None of these things will be found on a pre-med checklist, but they will make your life so much better AND have the added benefit of making you a better applicant. I have no doubt you'll find research, volunteering, and shadowing to develop as a student. What you also need to do is make sure you develop as a person. No one wants to work with robots. A ton of the questions I got on interviews were about the things I did in college that werent remotely academic or medically related.
Take a breath, slow down, have some fun. You'll be fine.