I would tell myself several things to my freshman self. A lot of this is really general, but definitely applies to anyone who wants to get into an Ivy League:
Don’t sign up for ECs just because they “look good.” That dominated my EC choices freshman and senior year. I went to a jock high school and I assumed no one gets into college without sports. The only problem? I’m un-athletic.
GPA is significantly more important than ECs.
I’m not saying you shouldn’t do any ECs. Just stick to the ones you truly enjoy.
Don’t be afraid to invent your own EC.
Laziness is contagious, and the high school environment breeds it.
You are a big fish in a small pond even if you’re in a huge high school where it doesn’t appear that way.
The opposite sex is pretty worthless while you’re still in high school.
AP classes aren’t a big deal anymore. Everyone who’s looking to go to an Ivy or an Ivy League-esque sort of school has taken a bunch of them and gotten 5s.
Don’t let yourself rot over the summer. Read, study, do math problems, and always remain active academically during vacations.
High school education for the most part sucks and you’ll hate it. However, you won’t hate it because academics as a whole suck. See previous bit of advice in order to alleviate this.
When a teacher gives an assignment, do it the night it is assigned even if it’s due a week from then. Don’t just avoid procrastination, take things a step further and always stay ahead of the game.
Two words: black coffee. This is optional, but personally, it lets me go on overdrive.
Bs, Cs, Ds, and Fs, are a part of life. Don’t shrug off Bs and don’t get discouraged by Cs, Ds, and Fs. Use them to your advantage. They teach you what not to do.
Don’t get intimidated by any subject. Intimidation leads to procrastination.
Pay attention in every class. In order to do that take excessive notes. You likely won’t look at them again, but the mechanics of taking them help you learn the first time a concept is presented, making studying for tests a lot easier if not unnecessary for most classes.
Physics and math are awesome and don’t let the perception that they are “too hard” trick you into actually thinking they are “too hard.”
The vast majority don’t care about their education. So, it’s your responsibility to stand out in that area. Making friends with the “smart” kids isn’t always enough to keep you motivated.
A 2000 on your SATs doesn’t mean you’re all set. Haha, hardly anyone in my high school gets over a 2000, so there’s a false perception that a 2000 can get you in anywhere.
There are other really excellent and competitive schools besides Harvard, the other Ivy Leagues, MIT, and Stanford. Ever heard of WUSTL, Amherst College, Williams College, Swathmore, Bowdoin, UChicago, Northwestern, or Harvey Mudd? No? You should check 'em out.
The kids going to your local state school aren’t all idiots. Many of them are hard working and intelligent. However, financial situations, bad luck, and personal preferences lead them to such “crappy” schools that are often not all that crappy.
The phrase “A B in an AP class is like an A in a honors class” is only a half truth that only applies when you talk about weighted GPAs (more on that later). All it is is a B in an AP class. I can’t tell you how many times I hear that quote by people taking AP classes for the first time and trying to justify a drop in their grades like that. If you’re an A student in honors classes, stay an A student in AP classes. Forgive yourself if your grades really do drop because of AP classes. Just make sure to improve them as the year continues.
You didn’t get that 4.2 on your first quarter report card because you’re so awesome and special that the 4.0 scale doesn’t apply to you. It’s a weighted GPA and it means nothing. Get it up to at least a 4.5 to have a reasonable chance at a top school.
You don’t have to do the same things others did to get into an Ivy League. A lot of what makes someone successful is finding his/her own way of doing things and standing out as a result.