# GPA and Average Calculation Methods

## Overview

This article explains the mathematical calculations available in SIRS to calculate Student Average and to calculate GPA. Keep in mind there is only one difference between an Average and a GPA: Which field is used in the calculation. How the calculations are done is exactly the same for averages and GPA.

- Grade Legends must be set up if you wish to perform
**GPA calculations**. The GPA Field (or GPA1, GPA 2, etc., depending on the choices you make) in the Grade Legend for the corresponding numeric grade/alpha entered is used in calculations. *Grade Legends do not have to be set up for*uses the numeric grade entered for a given Report Period, or uses the Final Grade. If Alpha grades are entered, then a Grade Legend is required and average calculations are performed on the Percent Equivalent field.**Average***averages,**unless Alphas are entered.*

**Average**

**Straight Average - **All courses are weighted equally. Sum (of the grades), divided by the number of grades used.

**Credit Earned - **Average calculated using the credits earned. Sum of (grades x credits earned), divided by Sum of credits possible.

**Credit Weighted - **Average calculated using the credit value of the class. Sum of (grades x credits possible), divided by Sum of credits possible.

**Course Weighted - **Average calculated using the course weighting as set up in Courses. Sum of (grades x course weight), divided by sum of course weights.

**Course Bonus Weighting - **Average calculated using a course bonus weighting. Sum of (grades x course weight), divided by count of all the courses used.

**Area Grades/Area Weighted - **The average calculated using the area weight as specified on each requirement area as the weight.

**GPA**

**Straight Average - **All courses are weighted equally.** **Sum (of the Grade Points), divided by the number of classes used.

**Credit Earned - **Average calculated using the credits earned. Sum of (Grade Points x credits earned), divided by Sum of credits possible).

**Credit Weighted - **Average calculated using the credit value of the class. Sum of (Grade Points x credits possible), divided by Sum of credits possible.

**Course Weighted - **Average calculated using the course weighting as set up in Courses. Sum of (Grade Points x course weight), divided by sum of course weights.

**Course Bonus Weighting - **Average calculated using a course bonus weighting. Sum of (Grade Points x course weight), divided by count of all the courses used.

**Area Grades/Area Weighted - **The average calculated using the area weight as specified on each requirement area as the weight.

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