An AMC score report can be genuinely confusing the first time a family sees one — it includes a raw score, but also index values used specifically to determine AIME eligibility, which aren't the same thing as the score itself.
The Raw Score
The raw AMC 10 score, out of 150, reflects the scoring formula directly: 6 points per correct answer, 1.5 for each blank, 0 for a wrong answer. This is the headline number most families focus on, and it directly shows how the exam itself was performed.
The AIME Qualification Index
Separately, the MAA uses an index (a combination of AMC 10 score, and for some students, AMC 8 performance) to determine the cutoff for AIME invitations each year. This index and cutoff can shift from year to year based on that year's overall results, which is why "what score do I need" doesn't have one fixed answer across years.
Percentile Rankings
The report also typically includes a percentile ranking, showing how a student's score compares to the full pool of test-takers that year. This is useful context for understanding genuine standing, separate from the pass/fail framing of the AIME cutoff.
How to Actually Use This Information
- Treat the raw score as the primary measure of performance — it's stable and doesn't depend on how other students did that year.
- Use percentile as context for genuine standing, not just a pass/fail signal.
- Track the AIME index and cutoff only once a score is close to the qualifying range — it's not usually worth obsessing over for a first attempt still building toward that level.