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           2009 AMC8 Report for all schools in Missouri                

           Number of schools returning results       33
           Average of school highest score        17.48
           Average school team score              48.30

           # of State Student Participants         2135
           Overall State Average Score             9.80

                       Average Score by Grade level

                   Grade         # of Students  Average

                    5th              44           8.64
                    6th             158           9.73
                    7th             649           9.31
                    8th            1257          10.12



           Number of Female Students                925
           Average Score of Female Students        9.27

                       Average Female Scores by Grade

                   Grade         # of Students  Average
                   5th               15           7.13
                   6th               77           8.71
                   7th              264           8.81
                   8th              562           9.63



           Number of Male Participants             1149
           Average Score of Male Participants     10.23

                       Average score for Males by Grade

                   Grade         # of Students  Average
                   5th               29           9.41
                   6th               76          10.80
                   7th              372           9.70
                   8th              666          10.52




                     2009 American Mathematics Contest  8
                   Number of Students Achieving Indicated Score



                 SCORE        MALE       FEMALE       TOTAL*
                  25            2                         3
                  24            1            2            3
                  23            1                         1
                  22            2                         2
                  21            1            1            2
                  20            2            2            4
                  19            5            1            6
                  18           10            5           15
                  17           22            5           28
                  16           33            9           42
                  15           48           21           70
                  14           56           31           92
                  13           72           53          127
                  12           97           78          181
                  11          131           91          228
                  10          153          117          277
                   9          159          116          282
                   8          132          114          255
                   7          100          118          224
                   6           58           66          129
                   5           35           53           91
                   4           17           25           42
                   3            6           12           19
                   2            3            2            5
                   1            1            1            2
                   0  (@)
                   0  ($)       2            2            5



           (@)  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                                    1            2
              24                                                 3
              23                                                 1
              22                                    1            1
              21                                                 2
              20                                    3            1
              19                                    2            4
              18                       2            6            7
              17                       4            6           18
              16          1            4           11           26
              15          1            4           21           44
              14          2            9           15           64
              13          3           15           22           87
              12          1           13           37          127
              11          2           16           73          136
              10          5           13           87          168
               9          8           11           93          164
               8          4           20           87          139
               7          4           17           75          126
               6          3           11           44           68
               5          8           11           32           40
               4          2            4           15           21
               3                       3           11            5
               2                       1            3            1
               1                                    2
               0(@)                                 2            2
               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
              73          1
              69          1
              64          1
              61          1
              57          1
              56          1
              53          1
              52          2
              51          1
              50          1
              49          2
              48          3
              46          4
              45          4
              43          1
              42          3
              41          2
              40          1
              34          1
              25          1







                   Table of Item Difficulty for the 2009
                      American Mathematics Contest  8
                 Tabulation of responses by    2135 Students
                             Percent of Responses


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

      1    0.14      0.05      2.44      2.01     95.13*     0.23      0.00
      2    2.34      2.81      3.04     88.48*     2.67      0.56      0.09
      3   12.37      2.72     81.78*     1.45      1.36      0.23      0.09
      4    9.84     67.54*     2.58      8.99     10.49      0.56      0.00
      5    5.43     15.60     18.59     55.18*     3.93      1.17      0.09
      6   64.40*     9.46      8.85      5.85     10.16      1.17      0.09
      7    3.19     10.21     31.43*    22.53     30.82      1.69      0.14
      8   31.48     17.99*    41.41      2.90      5.25      0.98      0.00
      9   15.78     35.32*    17.70     20.28      8.43      2.44      0.05
     10    3.47     27.78     14.99     45.62*     7.54      0.52      0.09
     11    6.04     18.41     25.85     29.93*    17.14      2.62      0.00
     12   20.14     26.32      4.78     38.78*     9.23*     0.70      0.05
     13    6.93     76.63*     4.68      8.90      2.15      0.70      0.00
     14    4.78      6.32*    80.09      4.54      3.00      1.26      0.00
     15   17.94     14.19     16.02     30.77*    18.78      2.15      0.14
     16   34.24     16.86     19.39     12.46*    14.80      2.15      0.09
     17   17.42     22.86*    23.37     21.31     11.24      3.79      0.00
     18   24.73     10.63     38.83*    13.86      9.70      2.01      0.23
     19   11.57     18.13     20.52     19.11*    26.65      3.93      0.09
     20   17.28     31.90     13.96     19.53*    13.54      3.61      0.19
     21   14.15     42.30     16.21     14.57*     7.73      4.87      0.19
     22   11.05     12.83     21.31     22.06*    27.78      4.68      0.28
     23   13.72     29.46*    18.17     23.09      9.84      5.48      0.23
     24   21.12     20.05     22.67     16.91     12.83*     6.28      0.14
     25   15.78     18.74     17.94     16.72     22.81*     7.87      0.14


   (*)  Correct Response

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