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IB grade boundaries

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Grade boundaries for recent International Baccalaureate Diploma exams

Below are the overall subject grade boundaries for a number of International Baccalaureate (IB) Diploma courses that were assessed in May 2021. There were many changes to IB assessments in 2021 - including a non-examination route - so it can be expected that these boundaries could be quite different in later years.

Biology

Biology Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 76-100
  • 6: 59-75
  • 5: 47-58
  • 4: 34-46
  • 3: 24-33
  • 2: 16-23
  • 1: 0-15

Biology Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 75-100
  • 6: 59-74
  • 5: 44-58
  • 4: 31-43
  • 3: 22-30
  • 2: 12-21
  • 1: 0-11

Business Management

Business Management Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 65-100
  • 6: 55-64
  • 5: 46-54
  • 4: 34-45
  • 3: 25-33
  • 2: 11-24
  • 1: 0-10

Business Management Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 67-100
  • 6: 54-66
  • 5: 40-53
  • 4: 27-39
  • 3: 18-26
  • 2: 10-17
  • 1: 0-9

Chemistry

Chemistry Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 80-100
  • 6: 67-79
  • 5: 50-66
  • 4: 35-49
  • 3: 20-34
  • 2: 15-19
  • 1: 0-14

Chemistry  Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 76-100

  • 6: 61-75

  • 5: 46-60

  • 4: 24-45

  • 3: 10-23

  • 2: 5-9

  • 1: 0-4

Chinese

Chinese B - Mandarin Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 78-100

  • 6: 57-77

  • 5: 44-56

  • 4: 32-43

  • 3: 16-31

  • 2: 9-15

  • 1: 0-8

Chinese B - Mandarin Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 76-100

  • 6: 54-75

  • 5: 41-53

  • 4: 30-40

  • 3: 15-29

  • 2: 8-14

  • 1: 0-7

Computer Science

Computer Science Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 63-100

  • 6: 49-62

  • 5: 35-48

  • 4: 22-34

  • 3: 16-21

  • 2: 11-15

  • 1: 0-10

Computer Science Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 62-100

  • 6: 49-61

  • 5: 37-48

  • 4: 27-36

  • 3: 11-26

  • 2: 6-10

  • 1: 0-5

Economics

Economics Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 67-100

  • 6: 54-66

  • 5: 40-53

  • 4: 27-39

  • 3: 18-26

  • 2: 9-17

  • 1: 0-8

Economics Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 72-100

  • 6: 59-71

  • 5: 44-58

  • 4: 31-43

  • 3: 20-30

  • 2: 10-19

  • 1: 0-9

English

English A: Language and Literature Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 77-100

  • 6: 62-76

  • 5: 50-61

  • 4: 36-49

  • 3: 26-35

  • 2: 13-25

  • 1: 0-12

English A: Language and Literature Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 77-100

  • 6: 60-76

  • 5: 46-59

  • 4: 35-45

  • 3: 23-34

  • 2: 10-22

  • 1: 0-9

English A: Language and Literature Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 74-100

  • 6: 62-73

  • 5: 50-61

  • 4: 38-49

  • 3: 25-37

  • 2: 12-24

  • 1: 0-11

English A: Language and Literature Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 68-100

  • 6: 57-67

  • 5: 46-56

  • 4: 35-45

  • 3: 23-34

  • 2: 10-22

  • 1: 0-9

Extended Essay

Extended Essay Level: EE May 2021 Timezone: 0

Overall boundaries:

  • A: 26-34

  • B: 20-25

  • C: 13-19

  • D: 6-12

  • E: 0-5

French

French B Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 77-100

  • 6: 64-76

  • 5: 52-63

  • 4: 40-51

  • 3: 22-39

  • 2: 11-21

  • 1: 0-10

French B: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 80-100

  • 6: 65-79

  • 5: 49-64

  • 4: 33-48

  • 3: 21-32

  • 2: 10-20

  • 1: 0-9

Geography

Geography Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 71-100

  • 6: 61-70

  • 5: 48-60

  • 4: 38-47

  • 3: 26-37

  • 2: 13-25

  • 1: 0-12

Geography Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 74-100

  • 6: 60-73

  • 5: 44-59

  • 4: 30-43

  • 3: 18-29

  • 2: 9-17

  • 1: 0-8

German

German B Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 86-100

  • 6: 70-85

  • 5: 52-69

  • 4: 35-51

  • 3: 25-34

  • 2: 13-24

  • 1: 0-12

German B Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 75-100

  • 6: 59-74

  • 5: 41-58

  • 4: 26-40

  • 3: 15-25

  • 2: 7-14

  • 1: 0-6

History

History Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 71-100

  • 6: 57-70

  • 5: 48-56

  • 4: 34-47

  • 3: 24-33

  • 2: 8-23

  • 1: 0-7

History Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 69-100

  • 6: 57-68

  • 5: 45-56

  • 4: 32-44

  • 3: 22-31

  • 2: 8-21

  • 1: 0-7

ITGS

ITGS Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 64-100

  • 6: 53-63

  • 5: 43-52

  • 4: 27-42

  • 3: 15-26

  • 2: 8-14

  • 1: 0-7

ITGS Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 61-100

  • 6: 49-60

  • 5: 37-48

  • 4: 22-36

  • 3: 14-21

  • 2: 7-13

  • 1: 0-6

Maths

Mathematics: applications and interpretation Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 62-100

  • 6: 47-61

  • 5: 33-46

  • 4: 19-32

  • 3: 10-18

  • 2: 4-9

  • 1: 0-3

Mathematics: applications and interpretation Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 70-100

  • 6: 55-69

  • 5: 39-54

  • 4: 25-38

  • 3: 13-24

  • 2: 4-12

  • 1: 0-3

Mathematics: analysis and approaches Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 69-100

  • 6: 53-68

  • 5: 38-52

  • 4: 24-37

  • 3: 12-23

  • 2: 4-11

  • 1: 0-3

Mathematics: analysis and approaches Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 72-100

  • 6: 58-71

  • 5: 40-57

  • 4: 23-39

  • 3: 12-22

  • 2: 4-11

  • 1: 0-3

Philosophy

Philosophy Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 75-100

  • 6: 61-74

  • 5: 50-60

  • 4: 34-49

  • 3: 26-33

  • 2: 11-25

  • 1: 0-10

Philosophy Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 74-100

  • 6: 59-73

  • 5: 44-58

  • 4: 32-43

  • 3: 25-31

  • 2: 13-24

  • 1: 0-12

Physics

Physics Level: HL May 2021 Timezone: 2

Overall boundaries:

  • 7: 69-100

  • 6: 54-68

  • 5: 39-53

  • 4: 29-38

  • 3: 20-28

  • 2: 14-19

  • 1: 0-13

Physics Level: SL May 2021 Timezone: 2

Overall boundaries:

  • 7: 63-100

  • 6: 50-62

  • 5: 37-49

  • 4: 26-36

  • 3: 15-25

  • 2: 10-14

  • 1: 0-9

Spanish

Spanish B Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 75-100

  • 6: 58-74

  • 5: 44-57

  • 4: 30-43

  • 3: 16-29

  • 2: 7-15

  • 1: 0-6

Spanish B Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 75-100

  • 6: 57-74

  • 5: 41-56

  • 4: 25-40

  • 3: 12-24

  • 2: 6-11

  • 1: 0-5

Theory of Knowledge

Theory of Knowledge Level: TK May 2021 Timezone: 0

Overall boundaries:

  • A: 21-30

  • B: 16-20

  • C: 10-15

  • D: 4-9

  • E: 0-3

Visual Arts

Visual Arts Level: HL May 2021 Timezone: 0

Overall boundaries:

  • 7: 77-100

  • 6: 63-76

  • 5: 48-62

  • 4: 34-47

  • 3: 18-33

  • 2: 8-17

  • 1: 0-7

Visual Arts Level: SL May 2021 Timezone: 0

Overall boundaries:

  • 7: 77-100

  • 6: 63-76

  • 5: 46-62

  • 4: 32-45

  • 3: 18-31

  • 2: 9-17

  • 1: 0-8

Useful links
Article by neb789 on Wednesday 11 January 2017
Last edited by Nik Taylor on Friday 16 June 2023