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           2009 AMC8 Report for all schools in Korea                   

           Number of schools returning results        9
           Average of school highest score        21.11
           Average school team score              59.89

           # of State Student Participants          741
           Overall State Average Score            14.14

                       Average Score by Grade level

                   Grade         # of Students  Average

                    5th              70          14.37
                    6th             158          13.11
                    7th             262          15.17
                    8th             247          13.65



           Number of Female Students                303
           Average Score of Female Students       13.01

                       Average Female Scores by Grade

                   Grade         # of Students  Average
                   5th               30          13.70
                   6th               49          10.24
                   7th              117          14.03
                   8th              106          12.91



           Number of Male Participants              432
           Average Score of Male Participants     14.97

                       Average score for Males by Grade

                   Grade         # of Students  Average
                   5th               40          14.88
                   6th              107          14.37
                   7th              145          16.08
                   8th              137          14.33




                     2009 American Mathematics Contest  8
                   Number of Students Achieving Indicated Score



                 SCORE        MALE       FEMALE       TOTAL*
                  25            6                         6
                  24            4            7           11
                  23           12            6           18
                  22           11           11           22
                  21           20           10           30
                  20           22            5           28
                  19           27           12           39
                  18           25            8           33
                  17           28           19           47
                  16           26           18           44
                  15           43           19           62
                  14           41           19           60
                  13           38           17           57
                  12           30           20           50
                  11           28           17           46
                  10           25           25           50
                   9           12           22           34
                   8           17           29           47
                   7           10           13           24
                   6            7           11           18
                   5                         9            9
                   4                         3            3
                   3                         3            3
                   2
                   1
                   0  (@)
                   0  ($)



           (@)  These students attempted some of the problems
           ($)  These students attempted none of the problems
           (*)  Total includes students who failed to mark their gender

                         2009 American Mathematics Contest  8
                             Number of Students by Grade
                              Achieving indicated Score



            SCORE   5th Grade    6th Grade    7th Grade    8th Grade
              25                                    3            3
              24          1            1            4            5
              23                       4            8            6
              22          5            2           11            4
              21          3            6           14            7
              20          1            5           16            5
              19          4            7           16           12
              18          4            7           15            7
              17          3            7           17           20
              16          5            4           19           16
              15          9           18           18           16
              14          4           11           26           19
              13          6           10           18           23
              12          8           14           13           14
              11          2           14           15           14
              10          2            8           16           24
               9          5            9           10           10
               8          5           13           11           18
               7          1            6            3           14
               6          1            5            6            6
               5          1            4            1            3
               4                       1            1            1
               3                       2            1
               2
               1
               0(@)
               0($)



           (@)  These students attempted some of the problems
           ($)  These students attempted none of the problems

           Note:  Some students failed to indicate a grade





                         2009 American Mathematics Contest  8
                             Number of Schools with 3+ students
                              Achieving team Scores



            SCORE   school count
              75          1
              69          2
              63          1
              58          1
              56          1
              52          1
              50          1
              47          1







                   Table of Item Difficulty for the 2009
                      American Mathematics Contest  8
                 Tabulation of responses by     741 Students
                             Percent of Responses


    ITEM    A         B         C         D         E       OMITS       ?
    ____  _____     _____     _____     _____     _____     _____     _____

      1    0.00      0.00      1.89      1.35     96.76*     0.00      0.00
      2    2.02      1.89      3.51     90.42*     1.89      0.27      0.00
      3    7.42      1.21     90.28*     0.40      0.67      0.00      0.00
      4    1.75     88.39*     1.62      4.72      3.10      0.27      0.13
      5    2.97      4.86     12.42     73.55*     3.37      2.83      0.00
      6   91.09*     2.83      1.48      2.02      1.89      0.54      0.13
      7    1.21      3.91     66.40*     9.45     15.92      2.83      0.27
      8    9.31     63.02*    15.92      5.67      5.13      0.81      0.13
      9    9.99     50.88*    13.50     13.23      8.37      3.78      0.27
     10    2.56     18.49     11.07     62.89*     4.05      0.94      0.00
     11    5.53     10.93     17.95     40.76*    17.14      7.56      0.13
     12    9.99     19.43      3.91     61.13*     4.05*     1.48      0.00
     13    4.86     85.56*     2.56      3.78      2.29      0.94      0.00
     14    3.91     31.71*    50.88      6.61      3.51      3.24      0.13
     15    9.99      7.83     11.61     53.44*    11.20      5.67      0.27
     16   21.46     11.74     15.92     30.23*    17.54      3.10      0.00
     17   11.20     36.30*    20.78     13.77     10.26      7.56      0.13
     18    9.45      7.83     62.62*     8.37      7.56      4.18      0.00
     19   11.34     11.61     10.53     42.51*    20.24      3.78      0.00
     20   17.81     24.83     14.30     28.48*    10.80      3.78      0.00
     21   11.34     38.60     17.68     19.43*     5.40      7.56      0.00
     22    9.58     13.50     16.46     41.43*    12.15      6.61      0.27
     23    9.58     39.68*    14.98     19.16      9.31      7.29      0.00
     24   10.66      9.58     18.35     11.88     41.43*     8.10      0.00
     25    9.99     13.90     21.86     18.22     26.05*     9.99      0.00


   (*)  Correct Response

   (?)  Response the computer was unable to read due to incomplete
        erasures or two answers marked for the same problem