The PSAT is a practice test for the SAT. The PSAT is only offered in October. Students register through CHS to take it. The test is made up of two sections: math and evidence based reading and writing. The score ranges for each section are 160-760 for a total score range of 320-1560. PSAT scores are not sent to colleges; it's just a practice, so you shouldn't worry to much about the score. There is a box you can check on the test that gives consent for colleges to send you marketing materials based on your score. Those schools don't know your actual score, they just know that you scored in a certain range. Plenty of information about the test and what to expect on test day can be found at PSAT's website.
The PSAT is the National Merit Scholarship Qualifying test. Juniors who score exceptionally well on the PSAT may earn National Merit commended, semi-finalist or finalist status. Each year we have roughly between five and ten commended students and up to five semi-finalist.