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New York State Education Department Using Growth Measures for Educator Evaluation. August 2012. By the End of This Presentation…. You should be able to:
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New York State Education DepartmentUsing Growth Measures for Educator Evaluation August 2012
By the End of This Presentation…. • You should be able to: • Explain how growth ratings (HEDI) and scores will be obtained from educator overall MGPs and confidence ranges based on 2011-12 State-provided growth measures
Key Points about NYS Growth Measures • We are measuring student growth and not achievement • Allow teachers to achieve high ratings regardless of incoming levels of achievement of their students • We are measuring growth compared to similar students • Similar students: Up to three years of the same prior achievement, three student-level characteristics (economic disadvantage, SWD, and ELL status) Every educator has a fair chance to demonstrate effectiveness on these measures regardless of the composition of his/her class or school.
Review of Terms • SGP (student growth percentile): • the result of a statistical model that calculates each student’s change in achievement between two or more points in time on a State assessment or other comparable measure and compares each student’s performance to that of similarly achieving students • Similar students: • students with the similar prior test scores,(up to three years), and ELL, SWD, and economic disadvantage status • Unadjusted and adjusted MGP (mean growth percentile): • the average of the student growth percentiles attributed to a given educator • For evaluation purposes, the overall adjusted MGP is used. This is the MGP that includes all a teacher or principal’s students and takes into account student demographics.
MGPs and Statistical Confidence MGP 87 Lower Limit Upper Limit Confidence Range • NYSED will provide a 95% confidence range, meaning we can be 95% confident that an educator’s “true” MGP lies within that range. Upper and lower limits of MGPs will also be provided. • An educator’s confidence range depends on a number of factors, including the number of student scores included in his or her MGP and the variability of student performance in the classroom.
Growth Ratings and Score Ranges 2011-12 The growth scores and ratings are based on an educator’s combined MGP.
HEDI Classification Approach: Teachers and Principals • Highly Effective (Well Above Average) requires: • An educator’s MGP is greater than 1.5 standard deviations above the State mean. • For 2011-12 this means MGP’s greater than or equal to 69 for teachers. • Effective (Average) requires: • An educator’s MGP is between 1 standard deviation below the State mean and 1.5 standard deviations above the State mean. • For 2011-12, MGPs of 42 through 68 for teachers. • Developing (Below Average) requires: • An educator’s MGP is between 1 and 1.5 standard deviations below the State mean. • For 2011-12, MGPs of 36 through 41 for teachers. • Ineffective (Well Below Average) requires: • An educator’s MGP is more than 1.5 standard deviations below the State mean. • For 2011-12 this means MGPs less than or equal to 35 for teachers.
From MGPs to Growth Ratings: TeachersRules on last slide result in these HEDI criteria for 2011-12 Mean Growth Percentile Confidence Range HEDI Rating Is your MGP ≥ 69? Highly Effective: Results are well above state average for similar students Is your Lower Limit > Mean of 52? No Is your MGP 42-68? Effective: Results equal state average for similar students Any Confidence Range No Is your MGP 36-41? Developing: Results are below state average for similar students Is your Upper Limit < Mean of 52? No Ineffective: Results are well below state average for similar students Is your MGP ≤ 35? Is your Upper Limit < 44? No Yes Yes Yes Yes Yes Yes Yes Yes No No
From MGPs to Growth Ratings: PrincipalsFor principals the rules lead to these HEDI criteria for 2011-12 Mean Growth Percentile Confidence Range HEDI Rating Is your MGP ≥ 61? Highly Effective: Results are well above state average for similar students Is your Lower Limit > Mean of 51? No Is your MGP 45-60? Effective: Results equal state average for similar students Any Confidence Range No Is your MGP 41.5-44? Developing: Results are below state average for similar students Is your Upper Limit < Mean of 51? No Ineffective: Results are well below state average for similar students Is your MGP ≤ 41? Is your Upper Limit < 46? No Yes Yes Yes Yes Yes Yes Yes Yes No No
Illustrating Teacher Growth Ratings: (Another Way) (2011-12 cut scores) MGP 1 MGP 99 Well Below Average (35) Average (52) Below Average (41) Well Above Average (69) MGP MGP MGP MGP MGP MGP MGP Upper limit CR for Ineffective (44)
Illustrating Teacher Growth Ratings: (2011-12 cut scores) MGP MGP 1 MGP 99 Well Below Average (35) Average (52) Below Average (41) Well Above Average (69) MGP Ineffective Highly Effective Upper limit CR for Ineffective (44)
Illustrating Teacher Growth Ratings (2011-12 cut scores) MGP MGP 1 MGP 99 Well Below Average (35) Average (52) Below Average (41) Well Above Average (69) MGP Ineffective MGP Highly Effective Developing MGP MGP Effective Effective MGP MGP Developing Upper CI for Ineffective (44) Effective
Assignment of Points with HEDI Category Teachers Principals • Point value of 3 includes educators with MGPs in the Ineffective category but CRs above 44 (for teachers) and above 46 (for principals) • Point value of 9 includes educators with MGPs in the Developing category but CRs above state average • Point value of 17 Includes educators with MGPs in the Highly Effective category but CRs below state average