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Decoding Your Child's ITBS Scores


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A brief look at how to read and understand your child's ITBS score.

Published in: Education, Technology

Decoding Your Child's ITBS Scores

  1. 1. Understanding YourChild’s ITBS Test Scores Kary S. Kublin, Ph.D., CCC-SLP Support Services Coordinator December 2011 Cornerstone Learning Community, Kublin (2011)
  2. 2. Agenda  Introduction  Reading the score sheet  Placing scores in context  Questions Cornerstone Learning Community
  3. 3. What is the Iowa test?  A norm-referenced test developed by the University of Iowa  tests mastery of the academic skills found in the elementary curriculum  has been used across the nation in similar form since 1935, and is supported by research and documentation Cornerstone Learning Community
  4. 4. Standardized testing sameness – others have taken the same test under the same conditions scores can be compared from one time to the next and among students and groups scores of individuals can be combined meaningfully to describe group performance administered at CLC in fall to students grade three through eight represents a “snapshot” of a student’s performance at a specific time. Cornerstone Learning Community
  5. 5. ITBS Core Subtests Reading Math Problem Reading Concepts & Solving & Computations Vocabulary Comprehension Estimation Data Interpretation Language Usage & Spelling Capitalization Punctuation Expression
  6. 6. Reading the score sheet Cornerstone Learning Community
  7. 7. Types of Scores that appear ona Student Report Standard Score (SS) Grade Equivalent (GE) National Stanine (NS) National Percentile Rank (NPR)
  8. 8. Standard scores Used to convert raw scores into numbers that can be compared Describes a student’s location on an achievement continuum Compares individual performance to the normed sample Cornerstone Learning Community
  9. 9. Grade Equivalent (GE) A decimal number that indicates the grade level and the months (e.g. 3.2 would indicate a third-grade level in the second month). GE’s indicate what the average student in the indicated level would achieve if given the same test.
  10. 10. GE-Example Example: My 4th grade child received a 6.3 GE in math computation. This indicates that her score is like the one a typical student in the third month of 6th grade would likely get on that same test.
  11. 11. Grade Equivalent (GE) GE does not indicate a student’s instructional level. GE allows for comparison of growth over time.
  12. 12. GE Growth ComparisonsLow Performing student – less than 20 months gain in two yearsEX: Fall grade 5 – 4.2 Fall grade 7 – 5.6Average Performing student – about a 20 month gain in two yearsEX: Fall grade 5 – 5.2 Fall grade 7 – 7.2High Performing student – more than 20 month gain in two yearsEX: Fall grade 5 – 6.2 Fall grade 7 – 8.8
  13. 13. Stanine Scores Stanine scores show a student’s relative position in a group of students who took the same test at the same time of year nationally. The (standard nine) stanine method ranges from a low of 1 to a high of 9 and has an average value of 5;  1,2 or 3 is below average  4,5 or 6 is average  7,8 or 9 is above average Stanines are a convenient way to identify areas of strength and weakness in a set of test scores. They are less precise indicators than the detailed NPR’s.
  14. 14. Stanine Cognitive Level S Very High 9 Above Average 7&8 Average 4, 5, & 6 Below Average 2&3 Very Low 1 Cornerstone Learning Community
  15. 15. Stanine- Example My 5th grade son received a stanine score of 6 in his Math Total score. This means that out of the group of students that took the same test he performed within the average, but at the high end of the average.
  16. 16. National Percentile Ranking(NPR) This is an indication ranging from 1 to 99 showing what “percentile” your childs score corresponds to in relation to others taking the same test. This is NOT the percent correct.
  17. 17. Nat’l Percentile Rank (PR) Achievement NPR Level Very High 96-99 Above Average 76-95 Average 25-75 Below Average 5-24 Very Low 1-4
  18. 18. NPR - Example My 7th grader scored in the 89th percentile in Reading Comprehension. This means that she scored higher than approximately 88 percent of 7th grade students on whom the test was normed.
  19. 19. How stanines and PR line up Stanines Pecentile Ranks 9 96 and up 8 89-95 7 77-88 6 60-76 5 40-59 4 23-39 3 11-22 2 4-10 1 Below 4 Cornerstone Learning Community
  20. 20. How teachers use the results• To understand individual profiles of students• To evaluate group strengths and needs• To look at long term curriculum strengths and development opportunities Cornerstone Learning Community
  21. 21. Validity Testing conditions Amount of experience with standardized tests, particularly the timed component Individual variables Cornerstone Learning Community
  22. 22. Why Test? To provide insight into the relative strengths and weaknesses in specific subject areas To monitor student progress over time To identify areas for enrichment or remediation in differentiating student instruction
  23. 23. 2011 Results by Grade Levelcompared to nat’l school norms Reading Language Math Core TOTALGrade 3 97 81 76 92Grade 4 99 80 93 94Grade 5 99 99 84 98Grade 6 90 99 99 99Grade 7 99 93 96 96Grade 8 99 99 97 99 Cornerstone Learning Community
  24. 24. Cornerstone’s approach toassessment Teacher assessment report card narratives Student led Standardized conference testing Cornerstone Learning Community
  25. 25. Questions? Comments? Discussion? Cornerstone Learning Community