12.4 Usage-Based vs Per-Student Pricing
Most test prep platforms charge a fixed amount per student, per month. EdisonOS uses a usage-based model which are credits and licenses so you pay for what students actually consume. This article compares the two models side by side at three academy sizes so you can see where each one wins.
The two pricing models
Test prep platforms typically use one of two pricing models. Knowing which one you're being quoted is the first step to comparing costs honestly.
Model | How you pay | Used by |
|---|---|---|
Per-student flat fee | Fixed amount per student per month or per test package, regardless of activity. | Most legacy test prep platforms |
Usage-based | Pay for credits (per test) or licenses (unlimited access for a fixed window). | EdisonOS |
Model A: Per-student flat fee
You buy a fixed number of student seats and pay the same rate per seat whether that student takes one test or fifty.
Buy a package of seats (e.g. 25 seats at $15/student = $375/month).
Every seat costs the same regardless of activity.
Unused seats typically do not roll over.
Payment is usually upfront and annual.
Model B: Usage-based (credits + licenses)
EdisonOS charges only when a student actually starts a test, or when you decide to pre-pay for unlimited access through a license.
Test credits. $1 per credit. A full-length Digital SAT costs 6 credits ($6 per student). Credits are consumed when a student starts a test, not when it is assigned.
Student licenses. Optional. Fixed price for 1, 3, or 12 months of unlimited testing on a specific exam for a specific student.
Base plan. Gives you the platform, team seats, and a bundle of credits.
Rollover. Credits roll over within your billing year. Licenses do not.
Scenario A: Solo tutor
Profile. 15 students. Each takes 4 full-length SAT mocks between September and December. The rest of the year, 3 to 5 students do light practice.
Period | EdisonOS (usage-based) | Competitor (per-student at $15/mo) |
|---|---|---|
Peak season (4 months) | 15 students × 4 tests × 6 credits = 360 credits ($360) | 15 × $15 × 4 = $900 |
Off-season (8 months) | 4 students × 2 tests × 6 credits = 48 credits ($48) | 4 × $15 × 8 = $480 |
Annual total | $408 + base plan | $1,380 |
The per-student model charges you for 15 seats year-round. Usage-based only charges when tests happen.
Scenario B: Growing academy
Profile. 60 students. 40 are long-term prep students taking monthly diagnostics. 20 are short-term, taking 2 to 3 mocks before test day.
Group | EdisonOS (credits + licenses) | Competitor (per-student at $15/mo) |
|---|---|---|
Long-term (40) - 12-month licenses | 40 × 12-month license | 40 × $15 × 12 = $7,200 |
Short-term (20) - credits only | 20 × 3 tests × 6 credits = 360 credits ($360) | 20 × $15 × 3 = $900 |
Annual total | $360 + licenses + base plan | $8,100 |
The hybrid strategy works because licenses are cheaper per test for high-volume students, while credits cost less for students who only test occasionally.
Scenario C: Large institute
Profile. 200 students. 6 full-length diagnostics per student per year, plus sectional quizzes.
Item | EdisonOS | Competitor (per-student at $15/month) |
|---|---|---|
Diagnostics (200 × 6 × 6 credits) | 7,200 credits → $6,336 after 12% volume discount | 200 × $15 × 12 = $36,000 |
Sectional quizzes (200 × 4 × 2 credits) | 1,600 credits = $1,600 | Often charged separately |
Annual total | ~$7,936 + base plan | $36,000+ |
When each model wins
Use case | Best model | Why |
|---|---|---|
Seasonal tutoring (summer bootcamps, fall prep) | Usage-based | You only pay during active months. |
Long-term, high-frequency testers | Licenses (within usage-based) | Unlimited tests for a fixed window costs less per test. |
Mixed student base (some heavy, some light) | Usage-based hybrid | Credits for light users, licenses for heavy users. |
Every student takes exactly the same volume | Either | Price becomes the only differentiator. |
Ultra-low volume (under 10 students, rare testing) | Usage-based | Pay-as-you-grow with no minimums. |
Hidden costs to watch for
Before signing up for any platform, check for these items, which often appear after the quote.
Item | EdisonOS | Many competitors |
|---|---|---|
Setup or onboarding fee | None | Often $500 to $2,000 |
Minimum seat commitment | None | Common (e.g. "minimum 25 students") |
Unused seat policy | Credits roll over for 365 days | Use-it-or-lose-it each month |
Content upload limits | Unlimited (fair use) | Capped storage or question banks |
Bandwidth throttling | None | Throttled after a usage threshold |
Transaction fees on payments | None (you use your own Stripe or Razorpay) | 2 to 5 percent per transaction |
White-labeling | Included in Pro and above | Often a separate add-on |
Contract lock-in | Monthly or annual, your choice | Annual-only contracts |