Not the full USPSA rulebook — just the rules that specifically decide your class: how many scores count, which ones get thrown out, and the floors that protect a class you've already earned.
Before you have four valid classifier scores in a division, you're listed as Unclassified (U) — there isn't enough data yet to set a class.
Once you have 4–6 scores on record, your class is the average of your best 4 among your most recent 6.
Once you've shot 7 or more classifiers, the window widens permanently — your class becomes the average of your best 6 of your most recent 8 scores, recalculated as you shoot new ones.
A classifier score below 2% is treated as unrepresentative of your actual skill (a procedural error, a major stoppage, etc.) and is dropped from the window entirely — it's never counted, high or low.
A handful of situations pull a score out of your average even though you shot it: a same-day duplicate attempt at the same classifier, a score shot in the wrong division, or a classifier shot while your USPSA membership had lapsed.
USPSA won't classify you below the highest class you have ever officially earned. This is a floor on the class label only — it never changes your actual percentage or which scores get averaged. Hit Master once, and ordinary classifier scores alone can't drop you below Master again.
Exceptional performance at a Level II, Level III, or National-level match can prompt USPSA to promote your official class directly — separate from the ordinary classifier-averaging process described above.
Classifier scores below 2% are treated as unrepresentative and dropped from the averaging window entirely — they neither count toward nor drag down your classification.
USPSA won't classify you below the highest class you've officially achieved on record. It's a floor on your class only — it never changes your actual percentage or which scores count.
Yes. Strong performance at a Level II or Level III (or National) match can prompt USPSA to promote your official class outside of the normal classifier-averaging process.
Your most recent 8 scores per division, of which your best 6 are averaged — best 4 of your most recent 6 while you're still earning your very first classification.
Usually one of the exclusion rules — a same-day duplicate, a cross-division attempt, or a score shot on a lapsed membership — is dropping a score from the official average that a simple hand calculation would have included.
MatchChaser applies every one of these rules automatically to your own scores — the window, the floors, the exclusions — and shows you the real number. Free.
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