*cracks fingers*
First off
<---- works for one of the largest national SAT prep companies as a tutor and adviser.
I don't know specifically for WI schools, but I'm assuming they're the same as UC/Cal State/etc. For most programs, SAT and GPA are weighted near equally, and to some effect can cancel each other out (high SAT can compensate for a slightly lower GPA or vice versa) but this person speaks the truth, in the end these are really the only things that matter. True your ECs will throw a small part in (she needs to have some to show that shes not a person who sits inside all day doing nothing) but a few core concentrated activities is sufficient.
Assume the essay is thrown away and not read, even if it is, the reader will spend about 30 seconds reading it, if that.
I've had so many kids with parents that were so goddamn clueless about what their kids education that I truly hate my job now. You are starting to sound like one of them, true she may be doing ok in her accelerated math and science classes, but if shes ridiculously stressed about it and failing its a huge huge blow to their self confidence. HS isn't about excelling in that regard, you will relearn everything you need in college. You just need to give her a good base and a good foundation to build on when she leaves and throw in a few APs to get college credit down in the things she wants to do. You need to sit down and talk to her frankly and throw down that a 2.8-3.4 GPA will not get you into a State university or state college, unless she wants to do a 2 year CC transfer. I suggest you lighten her load with classes they are supposed to be taking (CA has a roadmap to college for HS students with suggested classes taken per year according to difficulty level) see if you have something like that and go from there because it is EXTREMELY important that you boost her GPA up, it may in fact be too late as senior year grades are commonly not factored into the admissions process here, only that you are maintaining a C+ average or better once you are granted admission.
She needs to nail the living shit out of the SAT or ACT test, my company puts out a diagnostic that determines which test is a better suit for you, PM me and I can point you in the right direction for that. Find her a class or program she likes and will actually benefit from. Then tell her it is up to her to do the homework and practice for the class or it wont work. True the Asian programs are hard-ass for some students, but they dont work for everyone, especially if she isnt used to the Asian form of learning styles. Have her look at the SAT prep books and see which one she likes more and try that one, most programs will offer some sort of guarantee or test period where you can see if you like it or not. If you do enroll in a program, MAKE SURE you have a good instructor, some of us are lazy ass morons who could care less, or you could get someone like me that will go out of my way to help people on my own time, its total luck of the draw.
I could go on for a few days about this, but if you want PM me with specific questions and we can go from there.