The PSAT is practice for the SAT - you should use your PSAT score report to identify your weaknesses, so you know what to work on as you prepare for the SAT.
The PSAT has three sections: Critical Reading, Mathematics, and Writing Skills. You can earn between 20–80 points on each. The national average for high school juniors is approximately 50 points on each section.
Below your actual score on each section, you'll see a range of possible scores. For example, if you got a 38 on the Critical Reading section, your range of scores might be between 35 and 46. These ranges show what you should expect to get on the SAT
if you don't study or practice.
To figure out your SAT score, just add an extra zero. Each SAT section is worth 800 points rather than 80. So a score of 38 on the PSAT Critical Reading Section would be like a score of 380 on the same part of the SAT. The score report also includes an answers key for each section of the PSAT. The key lists the correct answer, your answer, and the question's level of difficulty (easy, medium or hard). On the Math section, the key will also tell you whether the question was about algebra, geometry, data analysis, or numbers and operations. You will receive your test booklet back with your score report, so you can figure out exactly which questions you missed and why.
But don't stop there–as you go over your answers, think about which questions you missed and why. Look for patterns. If you missed a lot of easy questions, you should slow down when you take the test. If you got most of the easy and medium questions correct but missed most of the hard, you should work on more advanced concepts. If you missed a lot of questions in the same content area, you'll know to review that area before you take the SAT.
Click here for more info on the PSAT/SAT:
http://www.princetonreview.com/college-education.aspx