Hong Life CalculatorsThe formula
Selection Index = (2 × Reading and Writing + Math) ÷ 10. Each section is scored 160–760, so the index runs from 48 (all minimum) to 228 (all maximum). Because Reading and Writing is doubled, it carries two-thirds of the index.
| Reading & Writing | Math | Total score | Selection Index |
|---|---|---|---|
| 760 | 760 | 1520 | 228 |
| 720 | 700 | 1420 | 214 |
| 700 | 680 | 1380 | 208 |
| 680 | 690 | 1370 | 205 |
| 650 | 650 | 1300 | 195 |
| 600 | 600 | 1200 | 180 |
| 550 | 520 | 1070 | 162 |
| 500 | 500 | 1000 | 150 |
Who is eligible
Only the PSAT/NMSQT (normally taken in the fall of 11th grade) enters students into the National Merit Scholarship Program. PSAT 10 and PSAT 8/9 scores show a Selection Index for practice only. NMSC, not the College Board, sets state Semifinalist qualifying scores each year.
FAQ
How is the PSAT Selection Index calculated?
Double your Reading and Writing section score, add your Math section score and divide by 10. Example: (2 × 680 + 690) ÷ 10 = 205.
What is the highest Selection Index?
228, from 760 in both sections. The lowest is 48.
Does a higher PSAT total always mean a higher Selection Index?
No. Two students with the same total can have different indexes, because Reading and Writing counts twice.
Sources (Checked Nov 10, 2026): College Board, “PSAT/NMSQT – Your Score Explained” (total 320–1520, sections 160–760, NMSC Selection Index 48–228 = Reading and Writing doubled plus Math, divided by 10). Estimate only, not an official result.