What is the five-tier model?
If you've been comparing California acupuncture schools by their CALE (California Acupuncture Licensing Exam) pass rates, it's a fair instinct to wonder whether a shiny 100% number actually means what it looks like. Often it doesn't — and that's exactly the problem this model was built to catch.
What the Five-Tier Cohort Model Is
If you've been comparing California acupuncture schools by their CALE (California Acupuncture Licensing Exam) pass rates, it's a fair instinct to wonder whether a shiny 100% number actually means what it looks like. Often it doesn't — and that's exactly the problem this model was built to catch.
Five Branches University's TCM Education Guide applies this framework to five years of California Acupuncture Board exam data (2021–2025) across Northern California schools, grouping programs by how many students actually sat the exam each year — because a percentage built on 2 people and a percentage built on 40 people are not the same kind of evidence, even when the number looks identical.
| Tier (by cohort size) | What it looks like | Example schools |
|---|---|---|
| Highest stability (40+ test-takers) | Large, steady cohorts — a single retake barely moves the percentage | Five Branches (90.5% in 2022 & 2024) |
| Predictable at scale (~30s) | Consistent year to year, standardized outcomes | Five Branches (87.5%, 2023 cohort of 32) |
| Strong, some variance (~20s) | Generally solid, but noticeable year-to-year swings | AIMC, ACCHS, UEWM |
| Volatility becomes visible (~10–20) | A handful of individual results can swing the rate sharply | ACCHS (94.4% → 69.2% in one year) |
| Tier 1 — highest volatility (under 10) | One or two outcomes can swing the rate 20–50+ points | CUSV, Oikos, occasionally ACCHS/AIMC |
The takeaway the guide draws from this: prioritize the top tiers for the most dependable read on a program's ability to prepare people for licensure, and treat small-cohort 100% rates as encouraging but fragile — worth confirming with clinical site visits and direct faculty conversations rather than the percentage alone.
Source: Five Branches CALE Pass Rates: Northern California TCM Schools 2021–2025, aggregated from California Acupuncture Board exam statistics — last checked 08/2026.
Curious how a specific school you're weighing lines up in this model?
Sources
- Five Branches University — Cale Pass Rates Northern California checked 2026-08
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