Why Students Get Different CGPAs Even with Similar Marks

Have you ever compared your results with a friend and wondered why they have a higher CGPA even though both of you scored nearly the same marks? This is one of the most common questions among college students.

The answer is simple: CGPA is not calculated using marks alone. Universities consider several factors such as credit hours, grade points, grading policies, and the method used to calculate cumulative performance. As a result, two students with very similar marks can graduate with different CGPAs.

CGPA Is a Weighted Average, Not a Simple Average

The biggest misconception students have is believing that CGPA is simply the average of all semester marks.

In reality, most universities calculate CGPA using a weighted average. Every course carries a certain number of credit hours, and subjects with higher credits contribute more to your final CGPA than subjects with lower credits.

This means that scoring well in a 4-credit course has a much greater impact than scoring the same grade in a 1-credit elective.

1. Credit Hours Make a Big Difference

Every subject is assigned credit hours based on its workload. Core subjects usually carry more credits than electives or laboratory courses.

Although all the grades are excellent, improving your performance in the 4-credit subjects contributes much more to your CGPA than improving a 1-credit subject.

2. Letter Grades Matter More Than Percentage Marks

Many universities convert percentage marks into grade points before calculating CGPA.

For example, two students may score 79% and 80%. While the difference is only 1%, they may receive different letter grades depending on the university's grading scale.

That one-point increase in grade point can noticeably improve the final CGPA, especially in high-credit subjects.

3. Universities Use Different Grading Policies

Not every university follows the same grading system.

Some institutions use:

• 10-point CGPA scale
• 4-point GPA scale
• 7-point grading scale
• Relative grading
• Absolute grading

Because of these differences, two students from different universities with identical marks may receive completely different CGPAs.

4. Relative Grading Can Change Everything

Some universities use relative grading, where your grade depends on how well you perform compared to your classmates.

For example, scoring 75% in one semester may earn an A grade if the class average is low, while the same 75% could result in a B+ if the overall class performs exceptionally well.

This is why students from the same university sometimes receive different CGPAs despite having similar percentages.

5. Backlogs and Repeated Subjects

Backlogs can also affect your CGPA.

Depending on your university regulations:

• The original grade may remain on your transcript.
• The latest attempt may replace the previous grade.
• Both attempts may be considered.
• Only passing grades may contribute to CGPA.

These policies vary between universities and can significantly influence the final CGPA.

6. Different Semester Credit Loads

Not every semester carries the same number of credits.

For example:

Because each semester contributes a different number of credits, your CGPA is not simply the average of your semester GPAs.

7. Internal Assessments and Practical Exams

Most universities include multiple assessment components when determining your final grade.

• Assignments
• Internal tests
• Laboratory work
• Projects
• Presentations
• End-semester examinations

Even if two students score similar marks in the final exam, differences in internal assessments can lead to different final grades and CGPAs.

Example Comparison

Although the average marks are almost identical, Student B earns a higher CGPA because they performed better in higher-credit subjects.

How to Improve Your CGPA

• Prioritize subjects with higher credit hours.
• Understand your university's grading policy.
• Focus on improving grade points rather than only percentages.
• Avoid backlogs whenever possible.
• Perform consistently across every semester.
• Track your progress using a CGPA calculator.

Frequently Asked Questions

Can two students with the same percentage have different CGPAs?

Yes. Different credit hours, grade points, and university grading systems can produce different CGPAs even when percentages are very similar.

Why is my CGPA lower than my friend's even though our marks are almost the same?

Your friend may have scored higher in subjects carrying more credit hours, or your university may use a different grading policy or grade-point conversion.

Does every university calculate CGPA the same way?

No. Universities use different grading scales, credit structures, and calculation methods. Always refer to your institution's official academic regulations.

Calculate Your CGPA Accurately

If you're unsure how your grades and credit hours affect your final result, use our free CGPA Calculator. It calculates your cumulative CGPA using subject grades and credit hours, helping you understand how each course contributes to your academic performance.

References

1. World Education Services (WES) – University Grading Reforms in India
   https://wenr.wes.org/credential-evaluation-issues/university-grading-reforms-begin-to-take-hold-across-india
2. Vivek Kumar Jain & Sanjeev Bakshi, Interrogating CGPA, SAGE Open (2014).
   https://journals.sagepub.com/doi/10.1177/2158244014564350
3. University of Melbourne – Weighted Average Mark (WAM).
   https://students.unimelb.edu.au/course-admin/wam