Best way to increase SNS/QR Scores?

[THS]

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I keep taking practice test after practice test, and my average scores are:

Bio: ~22
GChem ~18
OChem ~18
SNS: ~20
PAT: ~24
RC: ~25
QR: ~20

AA: ~22.25 (based on my calculations)

I have been using Barron's, along with my old textbooks and some free notes I find online.
I don't want to spend too much money, but am willing to buy KBB, and MAYBE DAT Destroyer (if it is absolutely essential, and will help me in 4 weeks)

What is the best way I can improve my SNS and QR scores? My test is September 22nd, so I will have to study during school. (Not applying this cycle)

 

[Swoops]

DAT destroyer, Chads, Math destroyer, and cliffs. Don't buy KBB. If you are looking to save money just buy chads and cliffs

 

[THS]

Just retook SNS and QR.

20 on SNS again

25 on QR.
Brings my AA up to 23.5!

 

[Dgeorg6]

wtf is SNS?

 

[Swoops]

Survey of natural sciences I believe. OC, GC, BIO

 

[LaughingGas]

Knowing Chad alone is 20+ score on the chemistries.

 

[mk4]

Just retook SNS and QR.

20 on SNS again

25 on QR.
Brings my AA up to 23.5!

What practice test are you taking?

 

[mrg276]

I watched chad's GC videos once, OC videos twice, all while taking detailed notes.. I took the quizzes after watching each video, and then went back and did all of them a second time later on... I made flashcards for all of the OC roadmaps and looked at them quite a few times... and ended by doing OC and GC in destroyer 2x... it raised my scores from a 15 GC, 17 OC to a 21 GC, 20 OC! If i could have changed anything I would have memorized the roadmaps better and went through the destroyer problems 1-2 more times! Good luck!

 

[Glimmer1991]

Yes, yes, do Chad's! HE IS SO AWESOME FOR THE CHEMISTRIES.

Also, especially if money is tight, shelling out the dough for the Destroyer isn't so necessary. The math destroyer WAS helpful, though--especially tests 1-8. I really recommend Barron's AP Bio and CliffNotes AP bio for the bio section. They covered absolutely everything on my tests, were cheap, and both were pretty easy reads.