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How to Calculate GPA and CGPA for Polytechnics, Universities & COEs (2022)

The journey of securing admission into a higher institution of learning can be tedious but the moment one gains admission into a University, College of Education or Polytechnic in Nigeria, he/she can be said to have passed a big hurdle. However, with each phase in life, comes new challenges and these challenges have to be surmounted for one to be considered successful in that phase.

Once you have gained admission into a higher institution, family, friends and well-wishers will come around to congratulate you and in some cases, they may also come to merry with you during your matriculation. However, as soon as that day is over, you are expected to swing into action and focus on your main objective of being in a higher institution. At this point, you begin to attend classes, write assignments and prepare for your exam. Students who are focused, already begin to learn how to calculate their GPA or CGPA depending on where they find themselves.

Knowing how to calculate your GPA or CGPA is as important as anything you are doing in other to ensure that you come out with good grades. Being able to calculate your result helps you determine your position each semester and how close you are to achieving your set objective for being in an academic institution of learning. So, in this article, we are going to give a breakdown of how you can calculate your CGPA whether you are in a University, Polytechnic or College of education.

GPA Calculation

How to Calculate Your GPA or CGPA for Polytechnics

Do you want to learn how to calculate your GPA/CGPA at a Nigerian polytechnic? Here’s a comprehensive step-by-step instruction on how to do it. The cumulative Grade Point Average (CGPA) is the average of all the courses you’ve taken at the university or polytechnic. It may also be expressed as the total grade points divided by the total number of units in the registered courses.

The technique for calculating GPA at Nigerian polytechnics is substantially identical to that used in Nigerian universities. However, in the computation of GPA and the granting of Ordinary National Diploma (OND) and Higher National Diploma (HND), Nigerian polytechnics utilize the following grading system:

NOTE: Please rotate your screen to see the other end of the tables used for illustration.

Polytechnics Grading System Table:

Score (%)GradeGrade PointFinal CGPAClass Of Degrees
100-80A4.003.50 – 4.00Distinction
79-70AB3.503.00 – 3.49Upper Credit
60-69B3.002.50 – 2.99Lower Credit
59-50BC2.502.00 – 2.49Pass
49-40C2.000.00 – 1.99Fail

Calculation of the OND1 GPA in the first semester:

Assume you teach the following courses and receive scores that correspond to the following grades, resulting in the distribution shown in the table below. Then your GPA will be as follows:

Course CodeCredit UnitGradeGrade PointsQuality Points (CU X GP)Total Points
Gsp 1012C2.002 x 2.004.00
Gsr 1052C2.002 x 2.004.00
Gsr 1112A4.002 x 4.008.00
Gsr 2012AB3.502 x 3.507.00
Coc 1012BC2.502 x 2.505.00
Stat 1312B3.002 x 3.006.00
Mth 2213C2.003 x 2.006.00
Total Credit Units1544
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OND1: GPA = Total points/Total Credit Units = 44.00/15 = 2.9 for the first semester.

As a result, your ND1 GPA for the first semester is 2.9.

Calculation of the OND1 GPA in the second semester:

Assume you teach the following courses and receive scores that correspond to the following grades, resulting in the distribution shown in the table below. Then your GPA will be as follows:

Course CodeCredit UnitGradeGrade PointsQuality Points (CU X GP)Total Points
Chm 1122A4.002 x 4.008.00
Gsp 2082E0.002 x 0.000.00
Gsr 1042c2.002 x 2.004.00
Gsr 2032C2.002 x 2.004.00
Bip 1593B3.003 x 3.009.00
Phy 1962BC2.502 x 2.505.00
Glg 1423C2.003 x 2.006.00
Total Credit Units1636

GPA for the second semester = Total points/Total Credit Units = 36.0/16 = 2.21875= 2.25

As a result, your ND1 GPA for the second semester is 2.25.

To determine your ND1 (first year) cumulative grade point average (CGPA), sum your ND1 first and second semester GPAs and divide the result by two, i.e. the number of semesters. Finding the average is all this entails.

Here’s how it goes:

(First Semester ND1 GPA + Second Semester ND1 GPA) / 2 = (2.9 + 2.25) / 2. Your OND1 CGPA = (First Semester ND1 GPA + Second Semester ND1 GPA) / 2 = (2.9 + 2.25) / 2.5.15 / 2 = 2.575 = 2.58 CGPA

For each semester’s outcome, the process is repeated.

That’s all there is to it when it comes to calculating GPA (Grade Point Average)/CGPA (Cumulative Grade Point Average) at Nigerian polytechnics.

How to Calculate GPA or CGPA for Universities

So here is the range/value of each letter grade at Nigerian universities, prior to the benchmark.

The Old Grading System Table

Percentage ScoreLetter GradePointsRating/Remark
70 – 100A5Excellent
60 – 69B4Very Good
50 – 59C3Good
45 – 49D2Fair
*40 – 44E1Pass
0 – 30FFail

The pass score/mark has been extended in accordance with the new NUC standard “E.” The letter “E” is considered to be “Fail”.

Here’s the new system: a student’s work at the university is currently rated in the letters below, with each letter carrying an equal number of points, as follows:

Table of the New Scoring System

Percentage ScoresLetter GradesPointsRating/Remark
70 – 100A5Excellent
60 – 69B4Very Good
50 – 59C3Good
*45 – 49D2Pass
0 – 44FFail

The minimum acceptable pass score is 45 percent. As a result, a ‘D’ will be the minimal passing mark for all courses, including electives and General Studies. All examples below, however, will be based on the most recent update (benchmark).

What Is Grade Point Average (GPA)?

The above grading method is used to calculate a student’s grade point average at the conclusion of each semester. Assume that in your first semester, you offer the following courses:

Course codeTitle of CourseCredit Unit
GSP 100The Use of English I2
GSP 111Use of Library2
GSP 105Natural Science I2
GSP 201Social Sciences I2
COS 101Introduction to Computer Science2
STA 131Inference I2
MTH 221Real Analysis I3
                                     Total Credit Units15
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Let’s assume your grades C, A, D, A, D, B, and C in each of the courses, equal to 3, 5, 2, 5, 2, 4, and accordingly. Using the new grading scale, each course’s total point will be calculated as follows:

Total Point of a Course = credit unit of the course multiplied by the grade point matching to the letter grade of the course in question, i.e. Total Point of a Course = credit unit of the course multiplied by the grade point relating to the letter grade of the course in question Grade point for the course, then repeat for all subsequent courses in the same manner:

Table for Calculating GPA in the First Semester

Course CodeCredit UnitLetter GradePoints GradeCredit x PointsTotal Points
GSP 1002C32 x 36
GSP 1112A52 x 510
GSP 1052D22 x 24
GSP 2012A52 x 510
COS 1012D22 x 24
STA 1312B42 x 48
MTH 2213C33 x 39
Total Points51

The entire point, 51, is then divided by the total number of credit units (15) to produce the grade point average. Noting that there is no space for approximation in the computation of GPA, the following formula is used: First Semester GPA = Total points/Total Credit Units = 51/15 = 3.4.

Calculation of the GPA for the Second Semester

Assume that in the second semester, the student takes the following courses:

Course codeTitle of CourseCredit Unit
CHH 112Basic Principles of Physical Chemistry2
GSP 208Humanities II2
GSP 106Natural Science II2
GSP 202Social Sciences II2
BIO 152General Biology II3
PHY 196Practical Physical III2
GLG 142Earth’s History3
                                        Total Credit Units16

And the student receives the following grades in the courses: A, A, C, F, D, D, and B. The second semester GPA of the student will then be displayed in the table below.

Course CodeCredit UnitLetter GradePoints GradeCredit x PointsTotal Points
CHH 1122A52 x 510
GSP 2082A52 x 510
GSP 1062C32 x 36
GSP 2022F2 x 0
BIO 1523D23 x 26
PHY 1962D22 x 24
GLG 1423B43 x 412
Total Points48

GPA for the second semester = The Total points/Total Credit Courses = 48/16 = 3.0 = 3.0

The cumulative grade point average (CGPA) is calculated by dividing the sum of the first and second semester GPAs by two (2), or the total number of semesters in a given year of study. As a result, the first-year GPA of a student is determined as follows:

First Year: CGPA = First Semester GPA + Second Semester GPA; Second Year: CGPA = First Semester GPA + Second Semester GPA; Third 6.4 / 2 = 3.2 GPA / 2 = (3.4 + 3.0)/2 = (3.4 + 3.0)/2 = (3.4 + 3.0)/2 = (3.4 + 3.0)/2 = (3.4 + 3.0)/2

CGPA in the first year: 3.2 (2nd Class Honours Lower (2/2)).

A student who is enrolled in a four-year program will have his or her last year result computed as follows:

FCGPA = Total of all CGPAs multiplied by the number of years in the program. If this was the case, the student earned the corresponding CGPA during her studies:

The first year’s CGPA is 3.2, the second year is 2.95, the third year is 4.40, and the fourth yearsis 3.84.

FCGPA = (4 Years) First Year CGPA + second Year CGPA + 3rd Year CGPA + 4th Year CGPA) as a result

FCGPA = 14.39 / 4 = 3.5975 = 3.59 (2nd Class Honours Upper (2/1) FCGPA = (3.2 + 2.95 + 4.40 + 3.84) FCGPA = (3.2 + 2.95 + 4.40 + 3.84) FCGPA = (3.2 + 2.95 + 4.40 + 3.84) FCGPA = (3.2 + 2.95 + 4.40 + 3.84) FCGPA

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Remember that we don’t use an approximation when calculating GPA.

How to Calculate GPA or CGPA for Colleges of Education

In Nigerian universities, there is a lot of diversity in the grading system, which is mirrored in the College of Education. The majority of institutions of education employ a combination of letter and number grades. The letter grades range from A to F, whereas the figure grades range from 0 to 7, with 0-4 figure ratings being used by a handful of universities.

The College has established a grading system that uses both letters (A-F) and numbers in accordance with the National Commission of Colleges of Education (NCCE) (0-5). This is because it is more in line with the Nigerian degree categorization system. As a result, the NCE’s grading system is comparable to that used at universities.

Grade point average (GPA): This is calculated by multiplying the number of credit units awarded to each course by the number of points earned in that course, then summing and dividing it by the total number of credit units you must have taken for the semester.

Cumulative Grade Point Average: CGPA is the most recent average of a student’s Grade Points earned over a course of study. It is a measure of a student’s overall performance at any time during his or her instruction. The CGPA is calculated by multiplying Total Grade Points by their corresponding Credit Units per semester and dividing by Total Credit Units for all of the student’s courses.

CREDIT 

UNITS

I

PERCENTAGE

SCORE

II

LETTER 

GRADE

III

GRADE 

POINT

AVERAGE

(GP) IV

GRADE

POINT

AVERAGE

(GP)

CUMMULATIVE

GRADE

POINT

AVERAGE

(GP) V

LEVEL OF 

PASS IN 

SUBJECTS

VI

Vary 

According to

Contact

Assigned

To 

Per course

Per week

Per semester

And

According

Work

Load

Registered

By

Student.

70-100A5DERIVED

BY 

MULTIPLYING

I AND IV

AND 

DIVIDING 

BY

TOTAL 

CREDIT

UNITS

4.50-5.00DISTINCTION
60-69B43.50-4.49

 

2.40-3.3.49

CREDIT

MERIT

50-59C3 

2.50-2.39

 

PASS

45-49D2 

 

1.00-1.49

 

 

LOW PASS

 

40-44

 

E

 

1

 

 

0.99

 

 

FAIL

 

0-39

 

F

 

0

TABLE:  APPROVED SCORING AND GRADING SYSTEM

In summary, this article is meant to enlighten you on how to calculate your result as well as help you graduate with a good grade, if that is your objective.

This is all you need to know about grading systems in higher institutions. Some schools make use of CGPA grading system while most make use of the GPA grading system. I have made both calculations well explanatory with tables for ease of understanding for you.

Please feel free to reach us via the comment section if you are having issues with calculating your GPA and we will be happy to assist.

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