The decision came at a meeting of the academic council on Tuesday.

However, results of the previous sessions would be published under the existing systems.

With the introduction of the unified grading system, disparities in justifying results would be removed, sources said.

The system would be finalised by the end of the month.

A decision to introduce a unified grading system in all public and private universities across the country was taken at a meeting of the university vice-chancellors with University Grants Commission (UGC) on December 24 last year.

A total of 75 vice-chancellors from different public and private universities attended the meeting.

The UGC at the meeting proposed a uniform grading system with nine grades for both public and private universities.

Under the grades, a student would have to secure above 90 marks for grade A or grade point average (GPA) of 4.0, above 85 for grade A- or GPA 3.75, above 80 for grade B+ or GPA 3.5, above 75 for grade B or GPA 3.25, above 70 for grade B- or GPA 3.0, above 65 for grade C+ or GPA 2.5, above 60 for grade C or GPA 2.0, above 55 for grade C- or GPA 1.5 and above 50 for grade D or GPA 1.0.

The grading system of DU however differs with those of UGC.

After the December 24 meeting, the DU VC said it is really not clear how a student deserves the lowest grade D or GPA 1.0 despite securing above 50 marks.

As per the decision of DU academic council, a student would have to secure 80 or above marks for grade A or grade point average (GPA) of 4.0, above 75 to 80 for grade A or GPA 3.75, above 70 to 75 for grade A- or GPA 3.5, above 65 to 70 for grade B+ or GPA 3.25, above 60 to 65 for grade B or GPA 3.0, above 55 to 60 for grade B- or GPA 2.75, above 50 to 55 for grade C+ or GPA 2.5, above 45 to 50 for grade C or GPA 2.25, and above 40 to 45 for grade D or GPA 2.

If a student acquires below 40 marks, he or she would be given grade F and a student must acquire grade D to achieve a degree.

UGC Chairman Prof Dr Asaduzzaman told The Daily Star that with a view to eliminating present imbalance created by independent grading systems in private as well as public universities, the UGC proposed a common grading system for all.

"It does not matter that Dhaka University is going to introduce a grading system for its own that differs a bit with the UGC proposal, as I said earlier the recommendations of UGC is not final, many changes may come as per the views of different universities" he added.