1. What is the PSAT Selection Index?

Definition: The Selection Index (SI) is a weighted combination of your PSAT scores used to determine National Merit Scholarship eligibility.

Purpose: It gives more weight to the Reading and Writing sections combined than to the Math section alone.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( SI \) — Selection Index (48-228)
• \( R \) — Reading score (160-760)
• \( W \) — Writing score (160-760)
• \( M \) — Math score (160-760)

Explanation: The sum of Reading and Writing scores is doubled, then the Math score is added to calculate the Selection Index.

3. Importance of the Selection Index

Details: This score determines National Merit Scholarship qualification, with cutoff scores varying by state.

4. Using the Calculator

Tips: Enter your PSAT section scores (each between 160-760) to calculate your Selection Index.

5. Frequently Asked Questions (FAQ)

Q1: What's a good Selection Index score?
A: Typically 207+ qualifies for National Merit recognition, but cutoffs vary by state and year.

Q2: How is this different from my total PSAT score?
A: Your total score is R+W+M (max 1520), while SI is weighted differently (max 2280).

Q3: Can I use SAT scores instead?
A: No, the Selection Index is specifically calculated from PSAT/NMSQT scores.

Q4: When will I know if I qualify?
A: National Merit Semifinalists are typically announced in September of senior year.

Q5: Does the calculator work for PSAT 8/9?
A: No, this formula is specifically for the PSAT/NMSQT taken in 11th grade.