Year

Paper

Maximum Mark

Mark Grade Boundaries

A*

A

B

C

D

June 2009

Unit 1 (CHY1H)

45

32

29

23

17

11

Unit 2 (CHY2H)

45

34

28

21

15

11

Unit 3 (CHY3H)

45

32

28

23

18

13

CAU (ISA + PSA)

40

36

34

30

26

22

January 2009

Unit 1 (CHY1H)

45

30

26

21

16

12

Unit 2 (CHY2H)

45

33

29

23

17

12

Unit 3 (CHY3H)

45

33

29

24

19

15

June 2008

Unit 1 (CHY1H)

45

33

30

23

17

12

Unit 2 (CHY2H)

45

31

26

20

14

11

Unit 3 (CHY3H)

45

34

31

26

21

17

CAU (ISA + PSA)

40

35

33

28

24

20

January 2008

Unit 1 (CHY1H)

45

34

28

22

16

11

Unit 2 (CHY2H)

45

35

29

22

16

11

Unit 3 (CHY3H)

45

29

24

19

14

11

June 2007

Unit 1 (CHY1H)

45

34

27

20

13

11

CAU (ISA + PSA)

40

34

31

27

24

20

January 2007

Unit 1 (CHY1H)

45

37

31

24

18

12