Guides
Step-by-step explanations of grade and GPA calculations for high school and college students.
Understanding grade calculations
Grade calculations can be surprisingly confusing, especially when a syllabus mixes weighted categories, extra credit, or a curve. The guides in the grade section explain the arithmetic behind common setups — how a weighted grading system distributes your final grade across homework, quizzes, midterms, and final exams, and why the percentage your LMS shows may not match what you calculate by hand. If you are trying to figure out whether you can still pass a class or what score you need on your final, start with Can I still pass this class? and What grade do I need on my final?
Understanding GPA calculations
GPA is a credit-weighted average of your letter grades, expressed on a 4.0 or 5.0 scale depending on your school and course type. The GPA guides cover the full conversion process — from letter grades to grade points to the weighted average — and explain where common confusions arise. High school students will want to read about weighted vs unweighted GPA and how AP and honors classes affect GPA before running any numbers. College students planning for graduate school or academic probation thresholds should read What is a good GPA? and Semester GPA vs cumulative GPA.
Each guide pairs with a free calculator so you can apply the formula to your own situation immediately. The guides explain the math; the calculators do it for you.