As stated before, definitely raise your SAT score as high as you possibly can and preferably over 1550 considering the School of Nursing is extremely competitive. I’m just curious: what is your SAT Essay score? Definitely, take those 2 subject tests. 3 would help even more so try to do so if possible but if not, 2 should suffice.
Both your UW and W GPA are extremely high and your definitely good on that part. Just make sure to at least maintain that GPA. If there was any specific reason or problem that caused you to get a B in any class, definitely explain that in the application when you apply (such as the B in CP Chem if there was any problem). Otherwise, your courseload is nearly impeccable.
You have done a lot of volunteering which is extremely impressive. Possibly get that hour count to 200+ hours if possible. (Just curious: does having a job count as volunteer hours? I don’t think so, right?)
You’ve got some good extracurriculars and have leadership positions in them. One thing you should make sure to do that makes you a unique applicant and is what colleges are actually looking for is to carry our activities or exhibit leadership by doing something which is easier to do when you have a leadership position in a club. Colleges aren’t necessarily looking to see if you have multiple leadership positions (though that is definitely beneficial to just have a leadership position) but they want to know what you did that exhibited your leadership positions. For example, take your HOSA chapter to competitions, expand the club in any way possible, et cetera. It’s very important that you take initiative and do stuff like this and to make sure that all those things are communicated effectively and in an impressive fashion on the application.
All that other stuff that you’ve done is really impressive! How did you get the time to do all of this??? Also make sure you get at least 3s on your AP tests because when you send your AP Scores to universities, you can’t pick and choose which ones you send. So make sure you don’t do badly on them. That’s great that you took almost all the most difficult courses that your school has offered throughout high school because that matters a lot to colleges.
Another thing you can do to raise your chances is to write exceptional essays so definitely get them started the summer before you apply for colleges and spend a lot of time on them because those are very important to colleges.
IMPORTANT: I have said so much and have suggested you do SO MANY other things on top of what you have done so far but know that you don’t have to do all of this. Doing everything I said on top of what you are already doing will probably be extremely stressful and really bad for your health and you have to remember that in the grand scheme of things nothing (including getting into your dream university/program) is worth the sacrifice of your health. So definitely considering what you are sacrificing to do what you have been doing so far and to do anything that I have suggested you do on top of that. I recommend you do that and see what you can do that I and the rest of the people that have commented on your thread have suggested and add as much as you can without sacrificing your health and life and relationships (familial, romantic, and friendly). Everything you’ve already done and have planned on doing already makes you a competitive applicant and if UCLA doesn’t accept you, they really don’t deserve you. You can go and exhibit your talents and strong work ethic as a student at another university and become a successful member of the medical field and achieve all your dreams. Remeber to keep that in mind at all times. I’m sure you’re already aware of that I just want to make sure that you do and that you especially think about that when thinking about what else you can do to improve your chances to get into UCLA Nursing.
BTW I am still a high school student as well and have not gone through the application process as well so that may give me less credibility. I just wanted to let you know about that. Every suggestion I have given above is based on the knowledge I have accumulated through talking to other people that have and what they have suggested to me, through some research, and a bit of it is just my personal opinion and advice on what you should do based on what I would do.
Anyways sorry for the length of this comment. It’s long as heck. Hopefully, I helped at least a little bit. If you have any other questions or want any other advice just respond to this comment. I’ll be more than happy to help!