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TN 12th Passing Marks & Grading System 2025: Tamil Nadu HSC Exam Criteria

TN 12th Passing Marks & Grading System 2025: Tamil Nadu HSC Exam Criteria

Edited By Garima Sihag | Updated on Jan 31, 2025 12:38 PM IST | #TN HSC Board
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The Tamil Nadu Board of Secondary Education (TNBSE) uses an eight-point grading system for Class 12th, with A1 representing the highest grade and E denoting the lowest grade. To successfully pass the TN 12th board exams, students are required to achieve a minimum score of 35 marks out of 100 in each subject. A score between 35 and 40 is assigned with a grade of "D" of 4 grade points. Check-in details about TN 12 passing marks and grading pattern are below in the article.

This Story also Contains
  1. Tamil Nadu Class 12 Grading System 2025
  2. Tamil Nadu Class 12 Passing Criteria 2025
  3. Subjects Selection in TN Class 12

Tamil Nadu Class 12 Grading System 2025

The table below shows the TN 12th grades and corresponding grade points. "A1" is the highest achievable grade, awarded to students who score between 91 and 100 marks. Students receive 10 grade points for an "A1" grade. Other grades and their respective grade point values are assigned based on the student's obtained marks.

Background wave

TN 12 Grading System 2025

Grade

Marks Range

Grade Point

A1

91-100

10

A2

81-90

9

B1

71-80

8

B2

61-70

7

C1

51-60

6

C2

41-50

5

D

35-40

4

E1

21-34

-

Tamil Nadu Class 12 Passing Criteria 2025

To obtain a passing certificate in each subject, students must achieve a minimum score of 35 out of 100 marks.

  • For language subjects and those without practical exams, students must secure at least 25 marks out of a possible 90.

  • For subjects with both TN theory exams and practical exams, students are required to achieve a minimum of 15 marks out of 70 in the theory portion and must have participated in the practical examination.

  • In vocational subjects where only practical examinations are conducted, students must secure a minimum of 20 marks out of 75 in the practical assessment.

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Class 12 Passing Marks for TN Board

Subject

Maximum Marks

Passing Marks

Tamil, Hindi, and Other Language Subjects

100

35

English

100

35

Physics

100

35

Chemistry

100

35

Botany

100

35

Zoology

100

35

Biology

100

35

Maths or Mathematics

100

35

Economics

100

35

Commerce

100

35

Accountancy

100

35

Political Science

100

35

Geography

100

35

History

100

35

Vocational Subject Practicals

75

20

TN 12th Passing Marks for Theory and Practical Subjects

In Tamil Nadu Board, the total marks for each subject in the 12th board exams are 100. This 100 marks is further divided into theory practical and internal assessment:

  • For subjects with only a theory exam: Students need to score at least 35 out of 100 marks.

  • For subjects with practical exams:

    • Students need to score at least 15 out of the 70 marks allotted for the theory exam.

    • There is no minimum mark requirement for the practical exam itself, but the candidate must appear for it.

    • They need to have an aggregate of 35 marks out of 100 (theory + practical + internal) to pass the subject.

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So, at last, the candidate has to achieve at least 35% in each subject to be considered to pass the Tamil Nadu State Board 12th exams.

Subjects

Theory Marks

Theory Pass Marks

Practical/Internal Assessment Marks

Total Marks

Pass Marks

Tamil

90

25

10

100

35

Telugu

90

25

10

100

35

Malayalam

90

25

10

100

35

Kannada

90

25

10

100

35

Urdu

90

25

10

100

35

Hindi

90

25

10

100

35

Sanskrit

90

25

10

100

35

Arabic

90

25

10

100

35

French

90

25

10

100

35

German

90

25

10

100

35

English

90

25

10

100

35

Mathematics

90

25

10

100

35

Physics

70

15

30

100

35

Chemistry

70

15

30

100

35

Biology

70

15

30

100

35

Botany

70

15

30

100

35

Zoology

70

15

30

100

35

History

90

25

10

100

35

Economics

90

25

10

100

35

Commerce

90

25

10

100

35

Accountancy

90

25

10

100

35

Microbiology

70

15

30

100

35

Biochemistry

70

15

30

100

35

General Nursing

70

15

30

100

35

Nutrition and dietetics

70

15

30

100

35

Home Science

70

15

30

100

35

Business mathematics and statistics

90

25

10

100

35

Geography

70

15

30

100

35

Statistics

70

15

30

100

35

Political Science

90

25

10

100

35

Ethics and Indian culture

90

25

10

100

35

Computer Science

70

15

30

100

35

Computer Applications

70

15

30

100

35

Subjects Selection in TN Class 12

In the Tamil Nadu Class 12 board exams, students select subjects from three main parts:

Part I: Language

  • Students choose one language from a variety of options, which usually includes Tamil, Hindi, Kannada, Telugu, Malayalam, Urdu, Sanskrit, Arabic, French, and German.

Part II: English

  • This is a compulsory subject for all students.

Part III: Elective Subjects

  • Students choose four subjects from a range of options, depending on the stream they choose (e.g., Science, Commerce, Arts). These subjects can be from the General Stream or Vocational Stream.

Some examples of subjects offered in Part III:

  • Science Stream: Physics, Chemistry, Mathematics, Biology (Botany and Zoology), Computer Science

  • Commerce Stream: Accountancy, Business Studies, Economics, Commerce, Business Mathematics and Statistics

  • Arts Stream: History, Geography, Political Science, Economics, Sociology, Logic

Examination

Subjects

Part I (Language)

Permitted languages: Tamil, Hindi, Kannada, Telugu, Malayalam, Urdu, Sanskrit, Arabic, French, German

Part II – English

English

Part III – 4 subjects

Any four subjects from the group of General Stream Papers or Vocational Stream Papers

Frequently Asked Questions (FAQs)

1. What is the pass mark for 12th in Tamilnadu?

The Tamil Nadu pass mark for the 12th board exams is 35 out of 100 for each subject. This means you need to score at least 35% to pass.

2. What is the grading system in Tamil Nadu?

The Tamil Nadu 12th board exams use an eight-point grading system, ranging from A1 to E1. A1 signifies the highest achievement (91-100 marks), followed by A2 (81-90), B1 (71-80), B2 (61-70), C1 (51-60), C2 (41-50), and D (35-40), which is the minimum passing grade. A score below 35 marks results in an E1 grade, indicating failure. Each grade corresponds to a grade point, with A1 carrying the highest value of 10. These grade points are then used to calculate a student's overall Grade Point Average (GPA).

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