12 raw score points separate a 540 math from the max score of 720. An average of 9 raw score points on each of the reading and writing sections (~18 points total) separate 560 and 720 verbal:
https://collegereadiness.collegeboard.org/pdf/psat-8-9-understanding-scores-fall-2016.pdfNorming to lower grades would require a nationally-representative norm group of sufficient size, which is probably not a major interest of the College Board. I would imagine that Duke TIP is compiling norms based on their test-takers, which may be large enough to have some statistical power, but these will not be nationally-representative.
Oh, and the end of the document has a raw score to scaled score conversion, for those who wish to know this.
And one more thing: the PSAT scores (8/9 and 10/NMSQT) are now scaled continuously with the SAT. That is, the obtained score on the PSAT is an estimate of the expected SAT score if that student were to sit for the SATs now. That may help you make some decisions about SAT/ACTs.
