Q:

# How do you calculate stanine scores?

A:

The stanine method for scaling test results uses a nine-point scale with a standard deviation of two and a mean of five, and a simple algorithm involving ranking and splitting the scores helps teachers categorize their students' results in different achievement levels. In general, stanines permit teachers to obtain a sense of their own students' achievement in comparison with other groups around the region or nation, and stanines yield a meaningful average, while percentiles do not.

## Keep Learning

In order to calculate stanines for a set of test scores, rank them from bottom to top. The bottom 4 percent receive a score of 1, the next 7 percent get a 2, the next 12 percent get a 3, the next 17 percent get a 4, and the next 20 percent get a 5. Then, follow the ratios downward as you move upward from 5: the next 17 percent get a 6, the next 12 percent get a 7, the next 7 percent get an 8, and the highest 4 percent receive a 9.

Using this method allows teachers to elicit a single-digit number from any test score. SOme distortion occurs when student scores are just on the other side of a stanine boundary from one another, but overall, this is a helpful method for classifying results.

Sources:

## Related Questions

• A:

IQ scores range from one to over 200 with the average score being 100, as of 2014. Sixty-eight percent of all IQ scores are within one standard deviation of the average. This means that most people have an IQ score between 85 and 115.

Filed Under:
• A:

The Screening Assessment for Gifted Elementary and Middle School Students, or SAGES, is a test specifically developed to screen potentially gifted children for aptitude in reasoning and achievement in subjects like mathematics and social sciences. The National Association of For Gifted Children lists several other forms of testing used to assess children and adults for exceptional talents and abilities. These include commonly used achievement tests such as the SAT and ability assessments such as IQ tests.

Filed Under:
• A:

As of 2014, Seton Testing sells a guide called "Scoring High on the TerraNova/CAT" that contains practice questions for the California achievement test. Christian Liberty also sells practice tests for second through twelfth graders.