IB Grade Conversion Chart for SL Years 1 & 2

 IB SL/HL Grade Conversion Scale

To be used for IB type assessments/assignments only.

Raw Score 

IB Grade

Raw Score

IB Grade

Raw Score

IB Grade

99-100

100

59

69

28

38

97-98

99

58

68

27

37

95-96

98

57

67

26

36

94-95

97

56

66

25

35

92-93

96

55

65

24

34

90-91

95

54

64

23

33

88-89

94

53

63

22

32

86-87

93

52

62

21

31

84-85

92

51

61

20

30

82-83

91

50

60

19

29

80-81

90

49

59

18

28

79

89

48

58

17

27

78

88

47

57

16

26

77

87

46

56

15

25

76

86

45

55

14

24

75

85

44

54

13

23

74

84

43

53

12

22

73

83

42

52

11

21

72

82

41

51

10

20

71

81

40

50

9

19

70

80

39

49

8

18

69

79

38

48

7

17

68

78

37

47

6

16

67

77

36

46

5

15

66

76

35

45

4

14

65

75

34

44

3

13

64

74

33

43

2

12

63

73

32

42

1

11

62

72

31

41

0

10

61

71

30

40

 

 

60

70

29

39

 

 


Generic IB Marks Conversion Scale

Please note that IB does not recognize +/- as part of the grade.

7+ = 99-100%

6+ = 95%

5+ = 89%

4+ = 79%

3+ = 69%

2+ = 59%

1+ = 49%

7 = 98%

6 = 93%

5 = 85%

4 = 75%

3 = 65%

2 = 55%

1 = 45%

7- = 96%

6- = 90%

5- = 80%

4- = 70%

3- = 60%

2- = 50%

1-= 40%