PrimePrep vs Kumon
An honest side-by-side comparison. Both programs share the same philosophy — mastery through repetition — but differ in format, price, and delivery.
At a glance
| PrimePrep | Kumon | |
|---|---|---|
| Format | Online, any device | In-person center + paper worksheets at home |
| Levels | 18 (counting → intro calculus) | 21 (counting → differential equations) |
| Age range | 3–18 | 3–18 (levels M–O extend to college) |
| Total problems | ~6.9M unique (generated from templates) | ~4,200 worksheets (static, fixed bank) |
| Pricing | $10–35/mo depending on plan | ~$150–160/mo per child |
| Multi-child | Family plan: $17/mo for up to 3 kids | Per-child pricing, no family discount |
| Feedback | Instant, after every answer | Graded by instructor, returned next visit |
| Progress reports | Real-time, AI-generated | Weekly/monthly from instructor |
| Scheduling | Anytime, anywhere | 2x/week at center + daily homework |
| Placement | Adaptive diagnostic (automated) | Instructor-administered test |
| Advancement | Algorithm-driven mastery thresholds | Instructor judgment |
| Human instructor | No | Yes (at center) |
| Commute required | No | Yes, 2x/week |
Curriculum coverage
| Topic | PrimePrep | Kumon |
|---|---|---|
| Counting & number sense | L1–L4 | 7A–4A |
| Basic addition | L5–L6 | 3A–2A |
| Addition & subtraction | L7–L8 | A–B |
| Multiplication & division | L9–L10 | C–D |
| Fractions | L11 | E |
| Decimals & order of operations | L12 | F |
| Integers & pre-algebra | L13 | G |
| Algebra 1 | L14 | H |
| Quadratics & roots | L15 | I |
| Advanced algebra | L16 | J |
| Pre-calculus | L17 | K |
| Intro calculus | L18 | L |
| Trigonometry | Planned (L19) | M |
| Advanced calculus | Planned (L20) | N |
| Differential equations | Planned (L21) | O |
| Geometry | Integrated (L9–L15) | Minimal |
| Statistics & probability | L13 | Not covered |
| Pencil control / writing | Not covered | 5A–4A |
Annual cost comparison
| Scenario | PrimePrep | Kumon | Savings |
|---|---|---|---|
| 1 child | $120/yr | ~$1,900/yr | 16x |
| 2 children | $204/yr | ~$3,800/yr | 19x |
| 3 children | $204/yr | ~$5,700/yr | 28x |
| 5 children | $288/yr | ~$9,500/yr | 33x |
PrimePrep prices are annual billing rates. Kumon estimates based on ~$155/mo per child (varies by location).
Where PrimePrep leads
- +5–33x cheaper, especially for multiple children
- +No commute — any device, any time, any place
- +6.9M unique problems vs ~4,000 static worksheets
- +Instant feedback — answers graded immediately, not next visit
- +Broader topics — geometry, statistics, probability built in
- +Real-time data — AI-driven mastery reports, not subjective assessment
Where Kumon leads
- +Human instructor — in-person guidance, catches misunderstandings
- +Higher ceiling — levels M–O cover trig, advanced calc, diff eq
- +Pencil skills — levels 5A–4A cover pencil control and number writing
- +60+ year track record — millions of students worldwide
- +Accountability — center visits 2x/week create routine
- +Mental math emphasis — core design philosophy throughout
What they share
- =Mastery-based progression — students don't advance until they're ready
- =Both start with a diagnostic placement test
- =Full curriculum from counting through calculus
- =Emphasis on repetition and fluency over conceptual exploration
- =Supplement programs — not replacements for school math