How do I use this calculator?
This calculator helps you estimate your percent correct and a rough scaled-score estimate on the GACE 100–300 scale. Official GACE scaled scores are produced by the test provider using statistical equating and cannot be calculated exactly from raw correct answers alone.
Calculator Operations:
- Scaled Score Estimator: Enter your scored selected-response (SR) total and SR correct. If your test includes constructed-response (CR), optionally add CR points and an assumed CR weight.
- Correct to Pass: Enter your scored SR total and choose a target scaled score (for many content assessments, common tiers are 220/250). Optionally include expected CR performance and an assumed CR weight to estimate SR correct needed.
- Percent/Raw Converter: Convert between SR correct and percent correct for a given SR total.
Use the calculate button when all known values have been entered and use the reset button when you want to clear the values from the calculator.
Enter the number of correct answers and the total number of questions into the calculator to estimate your percent correct and a simple (non-official) scaled-score estimate. The GACE score is a scaled score used to assess the qualifications of candidates for teaching in the state of Georgia.
- All Miscellaneous Calculators
- Passing Score Calculator
- Cutoff Score Calculator
- Quiz Grade Calculator
- Overall Grade Calculator
- Normalized Marks Calculator
Percent Correct (Raw Score) Formula
The following formula calculates your percent correct (raw score percentage):
PC = \frac{CA}{TQ}\times 100 \\
\text{Estimated scaled (linear)} \approx 100 + 200\times \frac{CA}{TQ}Variables:
- PC is percent correct (%)
- CA is the number of correct answers
- TQ is the total number of scored questions
Percent correct is not the official GACE scaled score. This page’s calculator also shows a simple linear 100–300 scaled-score estimate for convenience, but official GACE scaled scores are produced using statistical equating and may differ.
What is a GACE Score?
The GACE score is a standardized scaled score used to evaluate readiness for teaching certification in Georgia. The Georgia Assessments for the Certification of Educators (GACE) are a set of tests that measure the knowledge and skills of prospective Georgia public school educators. GACE scaled scores typically range from 100 to 300 and are used to help make scores comparable across different test forms and administrations. Passing (cut) scores vary by assessment; many content assessments use two passing levels (commonly 220 and 250), while many other assessments use a single passing score (commonly 250).
How to Estimate a GACE Scaled Score?
The following steps outline how to estimate performance using percent correct and a simple linear scaled-score estimate:
- First, determine the number of correct answers (CA).
- Next, determine the total number of scored questions (TQ).
- Compute percent correct: PC = (CA / TQ) × 100.
- If you want the calculator’s simple linear 100–300 estimate, use: Estimated scaled ≈ 100 + 200 × (CA / TQ). (This is an estimate only; official scaled scores are equated.)
Example Problem:
Use the following variables as an example problem to test your knowledge.
Number of correct answers (CA) = 75
Total number of questions (TQ) = 100
Percent correct = (75 / 100) × 100 = 75%
Using the calculator’s simple linear estimate, the scaled score ≈ 100 + 200 × (75/100) = 250 (estimate only).
