How We Calculated Your Score
This page explains the exact methodology behind the Baseline Score, Potential Score, Score Stability Index (SSI), and how we surface Score Killers in your report.
Baseline Score
The baseline score is calculated using weighted accuracy across all diagnostic questions. Each question is weighted by difficulty, with harder questions contributing more to your score. The raw weighted percentage is mapped to the 200–800 SAT scale for each section (Reading & Writing and Math), then summed and rounded to the nearest 10.
Potential Score
Potential uses a tiered recovery model based on your current score band:
- Below 1000: Up to 65% of the gap to 1600 is recoverable
- 1000–1200: Up to 78% recoverable
- 1200–1400: Up to 90% recoverable
- Above 1400: Up to 95% recoverable
Recovery rate is modulated by your hard-question performance (a ceiling factor) and assumes ~40 hours of structured, targeted practice.
Score Stability Index (SSI)
SSI measures consistency across domains using weighted variance. It analyzes your accuracy variance across the SAT domains, weighted by question count per domain. Higher variance implies lower stability and greater volatility on test day.
- SSI ≥ 70: High Stability
- SSI 40–69: Developing Stability
- SSI < 40: Low Stability
The resulting stability band represents the expected variance between your floor and ceiling performance under test conditions.
Score Killers
Score killers are domains with the highest weighted miss impact. We calculate each domain's share of total missed questions, weighted by difficulty. Domains are ranked by accuracy (lowest first), and severity colors reflect:
- 0–20%: Critical (Red)
- 21–40%: Weak (Amber)
- 41–60%: Developing (Blue)
- 60%+: Stable (Green)