College Admission Index Calculator
Calculate a simplified college admission index based on GPA, standardized test score (SAT or ACT), and extracurricular activities.
Formulas Used
The admission index is a weighted combination of GPA, normalized test score, and extracurricular score.
- Normalized Test Score:
\\[ S_{\text{norm}} = \begin{cases} \frac{S_{\text{SAT}}}{1600} & \text{if SAT} \\ \frac{S_{\text{ACT}}}{36} & \text{if ACT} \end{cases} \\]
Where:
- \\( S_{\text{SAT}} \\): SAT score (400–1600)
- \\( S_{\text{ACT}} \\): ACT score (1–36)
- \\( S_{\text{norm}} \\): Normalized test score (0–1)
- Admission Index:
\\[ I = (w_1 \cdot G \cdot 25) + (w_2 \cdot S_{\text{norm}} \cdot 100) + (w_3 \cdot E) \\]
Where:
- \\( G \\): GPA (0.0–4.0)
- \\( E \\): Extracurricular score (0–100)
- \\( w_1 = 0.4 \\), \\( w_2 = 0.4 \\), \\( w_3 = 0.2 \\): Weights
- \\( I \\): Admission index (0–100)
Example Calculations
Example 1: High SAT, Moderate Extracurriculars
Inputs: GPA = 3.8, Test Type = SAT, Test Score = 1400, Extracurricular Score = 80
Calculations:
- Normalized Test Score: \\[ S_{\text{norm}} = \frac{1400}{1600} = 0.875 \\]
- Admission Index: \\[ I = (0.4 \cdot 3.8 \cdot 25) + (0.4 \cdot 0.875 \cdot 100) + (0.2 \cdot 80) = 38 + 35 + 16 = 89 \\]
Result: Admission Index = 89
Example 2: Moderate ACT, High Extracurriculars
Inputs: GPA = 3.5, Test Type = ACT, Test Score = 28, Extracurricular Score = 90
Calculations:
- Normalized Test Score: \\[ S_{\text{norm}} = \frac{28}{36} \approx 0.7778 \\]
- Admission Index: \\[ I = (0.4 \cdot 3.5 \cdot 25) + (0.4 \cdot 0.7778 \cdot 100) + (0.2 \cdot 90) = 35 + 31.112 + 18 \approx 84.11 \\]
Result: Admission Index ≈ 84.11
Example 3: Low Scores, Moderate Extracurriculars
Inputs: GPA = 3.0, Test Type = SAT, Test Score = 1000, Extracurricular Score = 70
Calculations:
- Normalized Test Score: \\[ S_{\text{norm}} = \frac{1000}{1600} = 0.625 \\]
- Admission Index: \\[ I = (0.4 \cdot 3.0 \cdot 25) + (0.4 \cdot 0.625 \cdot 100) + (0.2 \cdot 70) = 30 + 25 + 14 = 69 \\]
Result: Admission Index = 69
How to Use the Calculator
Follow these steps to calculate a simplified college admission index:
- Enter GPA: Input your unweighted GPA (0.0–4.0, e.g., 3.5).
- Select Test Type: Choose SAT or ACT.
- Enter Test Score: Input your SAT score (400–1600) or ACT score (1–36).
- Enter Extracurricular Score: Input an estimated score for activities (0–100, e.g., 80).
- Calculate: Click “Calculate Admission Index” to see the result.
- Interpret Result: The result shows the admission index (0–100) with calculations.
- Share or Embed: Use the share buttons to post results on social media, copy the result, or get an embed code.
Note: This is a simplified model for illustrative purposes. Actual college admissions consider many factors, including essays, recommendations, and more. Consult college admissions offices for specific requirements.