- Thread starter JJJ
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Scores/Interpretation: Age- and grade-based standard scores (M=100, SD=15), age and grade equivalents, percentile ranks, normal curve equivalents (NCEs), and stanines

I've never seen test scores written in this manner using "sum." I've never seen raw scores released to a parent, so I'm thinking the scores are Scaled Scores. Additionally, it appears the Reading subtest scores make up the overall reading score. For instance, if fluency is a part of the reading coomprehension problem, it's something that needs to be specifically targeted in her IEP.

With a mean of 100, 100 is dead on average. The standard deviation is 15, so low-average would be 85 (100-15); high-average would be 115 (100+15).

Scaled Scores can be converted to:

Reading Standard Score (m=100, sd=15) 75

T Score (m=50, sd=10) 33

scaled score (m=10, sd=3) 5

z -1.67

Percentile 5

Written Expression Standard Score (m=100, sd=15) 73

T Score (m=50, sd=10) 32

scaled score (m=10, sd=3) 5

z -1.80

Percentile 4

This tells me that your child has reading and written expression lds. I'd want additional testing in order to target specific weaknesses -- see the "new" test in the table with-subtests and composites at he web address above.

Understanding Tests and Measurements for the Parent and Advocate at http://www.wrightslaw.com/advoc/articles/tests_measurements.html will be helpful for you.