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Standard Scores Form ExamplesThe following are examples of what data to use and how to use the Standard Scores Forms.1. Percents or Percentile RanksThe average reading comprehension percentile ranks on a nationallystandardized test in 1992 and in 1995 are shown below:
You want to know what progress was made in each grade level, as measured by standard score. Just enter the 1992 percentile numbers in the Pre column (eg 57,..) and enter the 1995 percentile in the Post column (eg 65,..). Click on calculate and you get the standard scores you were looking for.
Average Gain: 0.21 Back to Quick & Dirty Standard Score Converter2. Levels of Attainment with MeansA school administers essay tests to measure writing success each year,as a pretest (in early September) and a postest (in May). The essays are holistically scored, using a levels-of-attainment scale with a minimum score of 1 and a maximum score of 5. Here are the average results from one grade level:
You want to know what was the average annual change in essay scores in standard units. Just enter 1, being the lowest score, for Lowest level of attainment and enter 5, being the highest score, for Highest level of attainment. Now enter the Pre Mean numbers in the Pre Mean column (eg 2.8,..) and enter the Post Mean numbers in the Post Mean column (eg 3.4,..). Click calculate and you get these results:
Average gain: 0.33 Back to Levels of Attainment with Means Form3. Levels of Attainment with Percentage of PopulationA middle school has its students keep portfolios on a career intrest. Theseportfolios are evaluated on a 1 to 4 point scale, where 1 is the lowest and 4 is the highest. The following results are obtained:
You want to know has there been improvement in career exploration activity as indicated by the portfolio assessments. Just enter 1, being the lowest score, for Lowest level of attainment and enter 4, being the highest score, for Highest level of attainment. Now enter the Pre percentile numbers in the Pre column starting with the lowest level first (eg 10,32,..). Next enter the Post percentile numbers in the Post column starting with the lowest level first (eg 10,18,..). Click calculate and you should have results like these:
Back to Levels of Attainment with Means, Percentages given for each level Form 4. Raw Point ScoresA 6th grade teacher givers her students a 10 point math quiz every week.The results are as follows for the last two weeks:
You want to know how much progress the class is making in math as measured by standard score. Just enter the lowest and highest possible scores (0 and 10) into the appropriate boxes, put the Last Week numbers in the Pre column (eg 5,0,9,..) and enter This Week numbers in the Post column (eg 7,1,9,..). Click calculate and get these results: Pretest count and mean: 5, 5.4 Posttest count and mean: 5, 6.4 Pretest standard unit: 0.10 Posttest standard unit: 0.36 Gain in standard unit: 0.26 Back to Pre-Test and Post-Test Raw Scores Form 5. Standard Deviation, Group Size, Pre and Post Means AvailableA locally developed 150 point test of fundamental scientific understandingwas used in a junior high school. The results were as follows:
You want to know what the improvement was in the 8th grade as measured by standard score. Just enter the 1993 Mean number from the 8th grade row for Pretest mean and enter the 1996 Mean number from the 8th grade row for Postest mean. Now enter the 1993 Stand. Dev. number from the 8th grade row for Standard deviation. Click calculate and get these results:
Back to Standard Deviation, Group Size, Pre and Post Means Available Form 6. Pre and Post Averages Given as NCEsThe 5th grade of a local elementary school is given a 100 questionreading comprehension exam two years in a row. The results are as follows:
You want to know what progress was made in reading comprehension as measured by standard score. Just enter the 1993 NCE Mean number as Pretest mean (eg 79.54) and enter the 1994 NCE Mean number as Posttest mean (eg 82.47). Click on calculate and get the following:
Back to Pre and Post Averages Given as NCEs Form |