How to Calculate JAMB Score Over 400

Have you been told that JAMB is a scam? Or do you believe that JAMB candidates pass base on luck?

Many of us have been brought into different schools of thought when it comes to JAMB because somehow, someway, many that have helped us with these schools of thought have been jammed by the JAMB.

The question is, are JAMBites only living by luck or each candidate can calculate his/her score even without seeing the result?


Writing JAMB exam for the first time? You don’t need to freak out by asking too many questions.

All your questions as regards the JAMB CBT exam can be answered if only you will pay attention and do less worry.

One of your questions as a JAMB exam candidate for the first time is, how do JAMB award marks?

JAMB is an examination body that deals with the admission of prospective tertiary institution aspirants. JAMB doesn’t just operate but they have rules that guide them. Likewise, JAMB has a guide on how their exams are been marked.


JAMB has a way of awarding their marks and any candidate that knows how JAMB award marks can grade his/her score even before leaving the JAMB CBT Center.

Calculating your JAMB score by yourself is not about hallucinating, it is real.

Pay attention to every detail here because this guide will help you on how you can calculate your JAMB score and everything you need to know about negative marking.


The Subject Composition

JAMB exam always comes in the form of the subject composition.

When preparing to write JAMB as a Tertiary institution aspirant, you need to take note of the fact that there are different subject compositions. Don’t be misguided to think that you will get into the JAMB CBT exam center to pick any subject of your choice.

In WAEC or NECO exams, students primarily take on themselves up to 9 different subjects of their choice but students only have the choice of write exams for 4 different subjects in JAMB.

JAMB subject composition is always base on the course of choice of individual students.

But, English Language is a general course for every JAMB candidate. This implies that you what be prepared for the writing exam on the Use of English in your JAMB exam.

In calculating the JAMB score over 400, the Use of English and the three other subjects picked by the candidate to form the subject composition are all important.

Each student will answer 300 questions in total.

Students will be graded over 400 marks with the 300 questions. Everything about the grading will be explained here so don’t have the mindset that JAMB is intentionally failing students.

Out of the 300 questions that will be answered by each student, the students will answer the following questions for each subject:

  • Use of English: it is a compulsory subject for all candidates. It comprises 150 questions. 150 of the 300 questions will be answered under the Use of English.
  • Other 3 subjects: the selection of the 3 other subjects will be done in line with the course that the candidate wants to study in a tertiary institution. Each of the 3 subjects comprises 50 questions. Students will answer only 50 questions in each of the other subjects.

Each student must be fully aware that he/she can score 400/400 in his/her JAMB exam only if he/she got all the 300 questions right.

The Subjects Scoring

There is no trick about the JAMB marking and more so, the JAMB exam is strictly CBT that is Computer Based Test.

Peradventure you think your exam is been wrongly marked then you everyone’s exam is wrongly marked because it is the computer that mark every candidate’s exam and computer only follows what has been program into it.

JAMB exam as CBT makes it very simple to calculate each result with ease.

In calculating your JAMB score, the first thing you need to note is that all the subjects will be marked over 100. That is, no matter the number of questions been asked in a subject, you won’t be graded more than 100 marks.

Each subject is graded over 100 marks and that is why we have 400 as the total mark. Therefore, for you to calculate your JAMB score, grade it on the grading point of 100%.

  • For you to calculate your Use of English with 100% grading point, follow these steps:

Assuming you scored 120 out of the 150 questions given in the Use of English, all you need is to multiply 100 with the 120 you scored and divide the result by 150 of the total question.

i.e (100 × 120) ÷ 150       = 12000 ÷ 150

= 80 marks

This means you score 80 marks from your Use of English.

  • For you to calculate other subjects apart from the Use of English:

Assuming you scored 40 out of the 50 questions given from each subject, what you need is to multiply 100 with the 40 you scored and divide the result by 50 of the total question.

i.e (100 × 40) ÷ 50            = 4000 ÷ 50

= 80 marks

This means you score 80 marks from each subject of the three subjects.

This implies that your total score from your JAMB exam is 80 + 80 + 80 + 80 = 320 marks.

To calculate your JAMB result is as simple as just doing your simple mathematics. Calculate everything and you can tell your score without any stress.

Do you still have the questions like, what of the negative marking that JAMB always award? Can I still rely on the subject scoring that I am about to see?

There is no problem with those questions popping up from your mind.

All you need is to pay attention and know how you can be negatively marked and to know the other factors that can warrant the negative marking.

The JAMB Negative Marking

Many think that JAMB awards negative marks and that is why people score less than they’ve predicted.

Even many that don’t prepare for the JAMB exam still tend to complain about the negative mark.

To your greatest surprise, there is nothing called negative marking with JAMB. JAMB doesn’t award negative marking for scoring a question wrongly and doesn’t award a negative mark for logging you out because you didn’t submit after using your allotted time for the exam.

You always have what you scored in the JAMB exam.

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