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Comparing Changes Over Time in One Group with Changes Over Time
in Another Group - Percent at Benchmark, Sample Size Known
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Enter
the data for your group
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a) Percentage for the more
recent year
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b) Number of students tested
in the more recent year
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c) Percentage for the
comparison year
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d) Number of students tested
in the comparison year
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Now enter the data for the
Comparison Group
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a) Percentage for the more
recent year
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b) Number of students tested
in the more recent year
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c) Percentage for the
comparison year
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d) Number of students tested
in the comparison year
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Results
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Effect Size
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Improvement Index
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Probability
this effect would occur by chance
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