ITBS Results - randyweiner：结果- randyweiner ITBS.doc

ITBS Fall 2009 Summary ReportThe ITBS (Iowa Test of Basic Skills) is a nationally norm-referenced test (NRT) used to compare the achievement of students in Marietta City Schools (MCS) to that of a representative national sample of students. The purpose of the NRT is to obtain information about how the performance of MCS students compares with that of students in a national sample, an external reference group. In other words, the ITBS is used to rank students performance on a scale. Scores from a norm-referenced test tell how a given students knowledge or skill measures up to that of others in a norm group. Prior to the fall of 2006, the ITBS was administered in the spring. However, in response to benefits cited by local school systems and research conducted at the University of Iowa, MCS decided to administer the ITBS in the fall beginning in 2006. Georgia law (O.C.G.A., Section 20-2-281) states that each local school system may elect to administer, with state funding, nationally norm-referenced instruments in reading, mathematics, science, or social studies in grade three, four, or five and in grade six, seven, or eight, subject to available appropriations, with assistance to such school systems by the State Board of Education with regard to administration guidance, scoring, and reporting of such assessments. The Marietta School Board of Education approved assessing students performance in grades 2, 4, and 7 using the ITBS in 2009-2010.Note: The availability of norms makes it possible to make score comparisons with the most relevant group of students. In 2007 Marietta City Schools began using the 2005 norms for scoring grade 2. The states contract with Riverside Publishing through the 2008-2009 school year specified that 2000 norms would be used for state funded scoring. In 2008-2009 due to a change in the law, MCS was able to select grades 4 and 7 as the grades to be scored using state funds. For this reason ITBS scores reported for grades 4 and 7 in 2008-2009 were based upon 2000 norms. Beginning in the 2009-2010 school year, the state entered into a new contract with Riverside publishing which specifies that 2005 norms be used for state funded scoring. In 2009-2010 ITBS scores reported for grades 2, 4, and 7 are based on 2005 norms. However, scores reported for grades 4 and 7 were also reported using 2000 norms. Consequently, 2009 ITBS scores for grades 4 and 7 outlined in this report may be compared to 2008 ITBS scores. For the purpose of this report, score variance is considered significant at +/-5 percentage points.This report presents information regarding the results of the ITBS administered in September 2009. The report is divided into the following parts: I. Comparison of MCS ITBS NPR results (2 years) for grades 2, 4, and 7a. Key Findings II. Comparison of ITBS NPR results by school for grades 2, 4, and 7a. Key FindingsIII. Comparison of ITBS NPR results by demographic groups for grades 4 and 7a. Key FindingsIV. NPR Data (2008-2009)a. Presented by school and subject tested for grades 2, 4, and 7b. Disaggregated by total NPR, ethnicity, English Language Learners, special education, and gender for grades 4 and 73/1/2019 1:07 上午 C:Documents and SettingslpierceMy Documents2010ITBSITBS2009-2010Reports 2009-2010ITBS 2009-2010 Summary Report with 2000 and 2005 norms.docDefinitionsNorm: a measure provided by a norm-referenced test that relates the test performance of an individual or group to the performance of the norm group.NPR (National Percentile Rank): the percentage of students in a norm group whose scores fall below a given students scaled score. For example, if a student score converts to a national percentile rank (NPR) of 75, the student scored higher than approximately 75 percent of the students in the national norm group. At the same time the average range of NPR is between the 25th and 75th percentile rank, and a score of 50 suggests half of the students making up the norm group would score above and below a student with this score.Reading Total (RT): average of Vocabulary and Reading Comprehension.Math Total (MT): average of Concepts & Estimation, Problem Solving, and Computation.I. Comparison of MCS ITBS NPR results (2 years) for grades 2, 4 and 7Key FindingsAn examination of NPR scores for MCS over two years (2008 and 2009) was conducted. In grade 4, MCS Computation score decreased (-10). Results indicate increases in: Grade 29o Concepts & Estimation (6)o Problem Solving (6)o Math Total (6) Grade 4o None Grade 7o Computation (9)II. Comparison of ITBS NPR results by school for grades 2, 4, and 7Key Findings An examination was conducted comparing NPR scores over two years (2008 and 2009) by school for each subject tested. Results indicate significant increases in NPR scores for the following:Grade 2 Vocabularyo ALB (15)o MC (13)o WS (6) Comprehensiono ALB (8)o MC (9)o SR (10)o WS (6) Reading Totalo ALB (13)o MC (14)o WS (7) Concepts & Estimationo ALB (16)o MC (23)o PS (7)o SR (5) Problem Solvingo ALB (12)o MC (22)o PS (11)o SR (7) Computationo ALB (6)o MC (13)o PS (6)o SR (10) Math Totalo ALB (13)o MC (23)o PS (10)o SR (10)Grade 4 Vocabularyo ALB (14)o HH (18)o WS (15) Comprehensiono ALB (5)o HH (14)o PS (5)o WS (10) Reading Totalo ALB (8)o HH (16)o WS (13) Concepts & Estimationo ALB (6)o HH (5)o MC (10)o PS (9)o WS (6) Problem Solvingo HH (16)o MC (19)o SR (5) Computationo MC (14) Math Totalo HH (7)o MC (13)Grade 7 Computationo MMS (9)An analysis of the 2009 range of NPR (scores) by grade level across schools was conducted for variability. Measures of variability are used to provide a description of how spread out scores are in a distribution. The table below represents the 2009 range of the NPR within MCS by subject and grade level tested. Ranges are presented as the distance from the lowest to the highest score in the NPR:2009 ITBS National Percentile Rank Scores RangesGradeReadingMath237-8234-73439-9239-927*4551*Only one school in MCS, therefore actual scores are presentedIII. Comparison of ITBS NPR results by demographic group for grades 4 and 7No comparative data for demographic groups can be derived at this time since data for 2009 is baseline data. The data for 2009 is treated as baseline since the norms used in deriving the scores for these two grades were changed to align with the norms required by the state contract with Riverside Publishing for scoring tests and reporting results. The state contract specifies that 2005 Norms will be used.Key FindingsGrade 4System NPR scores exceeded the average NPR (50) in Math (53)Demographic groups with NPR scores above the 50th percentile in Readingo Asian (78)o White (82)o Female (51) Matho Asian (89)o White (80)o Female (53)o Male (53)Grade 7Demographic groups with NPR scores above the 50th percentile in Readingo Asian (54)o White (71) Matho Asian (74)o White (71) IV. NPR Data 2009 - 2010ITBS NPR Grade 2 (2005 Norms)ReadingMathVoc.Comp.TotalConceptsProb. Sol.Compu.Total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eginning in 2007, scores are based on the 2005 norms establishing baseline data.ITBS NPR Grade 4 (2000 Norms)ReadingMathVoc.Comp.TotalConc./Est.Prob. Sol.Compu.TotalMCS200847615565616263200950615765625261ALB200846615667666667200960666473685567DL200834554555554654200932433940384139HH200824403351434648200942544956594355LH200840514655505654200940484551444046MC200852595647333841200952535357525254MCAA200889909194898392200988929294927592PS200832423844436350200936474253475051SR200837494554445351200932443951494449WS200860666470707472200975767776737275Beginning in 2009, scores are based on the 2005 norms establishing baseline data. However, scores using 2000 norms were also reported allowing 2008 to be considered as a baseline data year for 2000 norms.ITBS NPR Grade 7 (2000 Norms)ReadingMathVoc.Comp.TotalConc./Est.Prob. Sol.Compu.TotalMCS/MMS200847494852524349200944474554505251Beginning in 2009, scores are based on the 2005 norms establishing baseline data. However, scores using 2000 norms were also reported allowing 2008 to be considered as a baseline data year for 2000 norms.ITBS NPR Grade 4 (2005 Norms)ReadingMathVoc.Comp.TotalConc./Est.Prob. Sol.Compu.TotalMCS200945545054544853ALB200955595863625161DL200928343330313832HH200938464346503947LH200936414042373638MC200947454646454747MCAA200985888892907390PS200931393643394643SR200928363342424041WS200971707267686969Beginning in 2009, scores are based on the 2005 norms establishing baseline data and should not be compared to prior years results.ITBS NPR Grade 7 (2005 Norms)ReadingMathVoc.Comp.TotalConc./Est.Prob. Sol.Compu