Score Explanation - Academic Excellence

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Christian Liberty

Explanation of the California Achievement Test Scores
Score Name Explanation of Score
Raw Scores Raw scores are the actual number of correct answers within a given test section, and are used to calculate the Grade Equivalent, Percentile, and Stanine results. They should not be used for any kind of comparison or statistical calculation since each test section varies in the difficulty and number of questions.
Grade Equivalent Scores

Grade equivalent scores represent the grade level (year and month separated by a decimal point) of a student's ability compared to the median score of students at the same academic level. Scores that are above a student's grade level do not by themselves indicate proficiency to skip to the next grade level in the particular academic areas. These scores more likely show an understanding of only some of the concepts of that higher grade. Conversely, scores below a student's grade level may indicate a gap of understanding in those academic areas. Scores equal to a student's grade level are considered the minimum for grade level ability.
Percentile Scores Percentile scores are equivalent to the percentage of students from the norm group who received lower scores than the student. For example, a student with a percentile score of 73 means that the student did better than approximately 73% of the students in the norm group. Percentile scores do not represent the number of questions answered correctly. Percentiles are useful for comparing a student's performance over several sections of the test. However, because they are not measured on an equal scale of units, they are not suitable for most statistical calculations.
Stanine Scores

Derived from the term STAndard score from a NINE-unit scale, stanines are based on the mean of the norm group (who are given the score of 5) and a standard deviation of 2.0. Scores are determined by the amount of standard deviation from the norm group, in approximately one-half standard deviation increments. The following table lists the meaning of each score:

9 Highest Level 6 Slightly Above Average 3 Well Below Average
8 High Level 5 Average 2 Low Level
7 Well Above Average 4 Slightly Below Average 1 Lowest Level

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