Hi guys!
I’m taking the SAT Subject tests for chemistry, biology and physics on 4th May,
I have till now taken Barron’s tests for Biology-M, and I got a 740 and 720 respectively, has me a bit worried, could you guys please tell me how you scored on these tests and then the actual one, I’ve heard Barron’s has them a bit tougher. Also if you could write about your chemistry and physics scores as compared to the tests in books, and for PR as well as the college board’s official. Any help would be appreciated!
Thanks A lot!
P.S. please reply quickly, I’ve got less than a week 
I strongly recommend taking a College Board practice test for the subject to see what range you are scoring. Usually scoring in the low to mid-700s on Barron’s means a high-700 to an 800 on the real test, but it varies among different subject tests. I recommend doing the CB practice test and seeing how you do. Good luck!
Don’t worry at all Barron’s high 600s even is a good score on some tests. 720 and 740 are good scores on barrons and mean 770+ on the real test.
I don’t have data for those tests, but my D took the Barron’s and College Board practice tests for Math 2.
She had a 790 and 3 800s on Barrons, but they were all raw scores of 44.5-46 where a rounded 45 was an 800. On the College Board practice tests, she almost always got 49, and usually a silly mistake. Below the 800 ceiling, 4 raw points would translate to 40 test points.
So add 40 to your Barron’s tests for an SAT test estimate, at least for Math 2. This is consistent with what I’ve read elsewhere, as well as with the advice above.
The College Board publishes Official Study Guides with 4 real tests for every exam. I would use the official tests for estimating scores.
Moe importantly why take all three science tests?