Is Your TAC Ready for Final Exams and Semester Grades?

With final exams and the end of semester approaching, sometimes grade book weighting questions or issues arise.

You can check your overall grades before finals with a simple test.  Place a test value in for a student or several students for their final exam grade in TAC, and see if you get the expected semester grade in TAC.  Be sure to change the grade(s) back before exiting TAC!

Calculating Weighted Average with Percentages

Let's see how weighting works with an example.  Just replace your own weights and student percentages to verify final grades in the example below.

A student is enrolled in a course where the final grade is determined based on these categories:

Category	Weighting
Tests	40 %
Final Exam	25 %
Quizzes	25 %
Homework	10 %

 

The student has earned the following percentage scores for each category: tests-83, final exam-75, quizzes-9 and homework-100.

To calculate a weighted average with percentages, multiply each category value by its percentage. Convert weighting percentages to decimals before you multiply. Then add all of these new values together.

So, multiply the student's average on all tests (83%) by the weighting percent that the tests are worth (40%). Multiply the final exam score (75%) by its weighting percent (25%). Do the same for both the quizzes (90 * 25%) and homework (100 * 10%).

The overall calculation is:

(83 * .40) + (75 * .25) + (90 * .25) + (100 * .10)

                                                = 33.2 + 18.75 + 22.5 + 10

= 84.45 or 84% if rounded down

If you need help calculating the final grade for a few students to see if your TAC is calculating properly, contact Lea Sloan. 

Need a refresher on TAC, take a look at our JTHS EdTech TAC tutorials.  Good luck!