Calculadora de Nota na Curva

The Grade on a Curve Calculator adjusts the scores of a class so that the average reaches a target value set by the teacher or evaluation system. The method is simple: each original score is added to the difference between the target average and the actual class average. For example, if the class average is 6.0 and the target average is 7.0, each student receives 1.0 extra point. This technique is common in difficult exams to correct distortions and ensure the score distribution is close to expected.

How it works: enter the individual student scores (separated by commas, spaces, or lines) and set the target average (usually 7.0 or 10.0). The calculator then computes the original average, calculates the difference (target − average), and applies that value to each score. The result shows the adjusted scores, the new average, and the applied difference. Important: the adjustment is linear and uniform, preserving the relative distance between students.

When to use: ideal for teachers who need to correct exams with below-expectation performance, or for students who want to simulate the impact of a curve correction. Also useful in preparatory courses and evaluation systems that adopt a cutoff grade. Cautions: the method assumes the exam difficulty was homogeneous for everyone; it does not correct individual injustices. Also, if the target average is too high, it may produce scores above the maximum (e.g., 12 out of 10), requiring an optional cap.

Limitations: the linear curve does not change the ranking or variance. If the class has extremely low or high scores, the adjustment may not be suitable. For very skewed distributions, consider non-linear methods (e.g., standard deviation). Always check if the target value is coherent with the exam scale (e.g., 0 to 10).