Tamil Nadu 12th Grading System 2026: Check Marking System, Exam Pattern, CGPA and Percentage Calculator

Q: What are the minimum marks to pass the Tamil Nadu board exam?

A minimum of 35 marks out of 100 in subjects and a minimum of 20 marks out 70 for the vocational exam is required to pass the exam.

Q: What is the highest grade awarded to a student

A1 is the highest grade awarded to a student who score between 91 - 100 marks

Q: What is the grade range in the Tamil Nadu 12th board grading system

The grade range is A1 - E1. A person eho obtains E1 is considered as fail, while A1 is the highest grade.

Abhishek Joshi

Updated on - Oct 17, 2025

Table of Contents

Tamil Nadu 12th Grading System 2026
Tamil Nadu 12th Grading System 2026: How to Calculate Percentage?
Tamil Nadu 12th Grading System 2026: Passing Criteria
Tamil Nadu 12th Exam Pattern
Tamil Nadu 12th Grading System 2026: Marking Scheme
Tamil Nadu 12th Grading System 2026: Revaluation
Tamil Nadu 12th Supplementary Exam 2026

Tamil Nadu's 12th-grade system is a 10-point scale grading system. The grade range lies between A1 and E1. The Highest grade is A1, while E11 is the lowest. A student scoring between 91 and 100 marks is awarded the A1 grade and an all-over grade of 10.

A student who scores between 21 to 34 marks is awarded an E1 Grade. A person is considered disqualified or a failure if he/she score an E1 grade. A student must score at least 35 marks and an all-over grade of D, which accounts for a grade point of 4, to pass the Tamil Nadu class 12 exam.

This article covers all the details about the Tamil Nadu 12th grading system 2026.

Tamil Nadu 12th Grading System 2026

TNDGE, the Tamil Nadu Directorate General of Education, is responsible for setting the Tamil Nadu 12th grading system. Tabulated below is the detailed Tamil Nadu 12th grading system 2026.

Grade	Marks	Grade Point
A1	91-100 MARKS	10
A2	81-90 MARKS	9
B1	71-80 MARKS	8
B2	61-70 MARKS	7
C1	51-60 MARKS	6
C2	41-50 MARKS	5
D	35-40 MARKS	4
E1	21-34 MARKS	NIL

Important:

Tamil Nadu 12th Grading System 2026: How to Calculate Percentage?

Students can follow the steps mentioned below to calculate the percentage from the marks obtained.

Step 1: Sum up the marks of all the subjects that you scored in the Tamil Nadu 12th exam.
Step 2: Divide the resulting sum by the total marks.
Step 3: Multiply the product by 100, and that is your percentage.

Tamil Nadu 12th Grading System 2026: Passing Criteria

The DGE Tamil Nadu has presented the following passing criteria for the 12th board exams. The total marks for the subjects are 100, except for the vocational exam, which is for a total of 75 marks. These subjects include Tamil, Hindi and other language subjects, English, physics, botany, chemistry, zoology, biology, mathematics, economics, commerce, accountancy, political science, geography and history. Out of 100, a student needs to score at least 35 marks to pass the subject. However, in the case of a vocational exam, a person needs to score 20 marks out of 75 to pass the exam.

Must Check: Tamil Nadu Class 12 Passing Marks

Tamil Nadu 12th Exam Pattern

A specific Tamil Nadu class 12 exam pattern is followed by the DGE Tamil Nadu for the 12th board exams. Students must check the official site for model papers, syllabus and exam patterns to get basic information about the exam. The theory paper is conducted for a total of 70 marks, and the practical paper is conducted for a total of 30 marks. These 30 marks incorporate 20 marks for practical and 10 marks for internal assessment.

Part 1 consists of the language paper. There are different languages in the syllabus, like Tamil, Hindi, Kannada, Telugu, Malayalam, Urdu, Sanskrit, French, German and Arabic.
Part 2 comprises the remaining subjects, as mentioned by the DGE authorities. However, it is the choice of students to choose the stream.

Tamil Nadu 12th Grading System 2026: Marking Scheme

There are a total of 4 sections in the paper.

Section A consists of 15 multiple-choice questions. Each MCQ stands for 1 mark. There is no negative marking.
Section B consists of short-answer-type questions, which carry 2 marks each. There are a total of 6 questions.
Section C consists of short-answer-type questions. Each question is for 3 marks. There are a total of 6 questions in this particular section.
Section D consists of long answer-type questions. Each question is for 5 marks. There are more than 5 questions given in this section, out of which students need to answer any 5.

Except for the multiple-choice questions, internal choice is included in every section of the question paper.

Also Read: Tamil Nadu Class 12 Preparation

Tamil Nadu 12th Grading System 2026: Revaluation

As soon as the result is declared, the students can check their marks online. The board provides an online mark sheet for the 12th board exam. However, the original marksheets will be provided by the school authorities themselves. If the students are not satisfied with the marks obtained by them, they can apply for a re-evaluation in some subjects.

There is a separate procedure for this. You need to apply online by filling out a form. The forms are released right after the declaration of the result in an online mode. Be careful while filling this form, as it will reflect your mark sheets as well. Select the subjects you need to get reevaluated. An additional revaluation fee has to be submitted along with the form. The board will revert soon after you have submitted the form and paid the fee. The received mark sheet will be the final mark sheet regardless of any increase or decrease in the marks obtained by the candidate.

Tamil Nadu 12th Supplementary Exam 2026

As soon as the result is declared, the students must check their results online. A student might have struggled to pass one or two subjects in the exam. In such a case, they can either apply for re-evaluation or, if they have not scored passing marks despite re-evaluation, they can appear for the CGBSE 12th supplementary examination. The exam form will be available online on the official website.

Be careful while filling out the form, as this will reflect your admit card, which is required to appear in the final exam. The results will be released soon after the examinations are finished. You can access the official portal to check the results of the same.