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2011 Top to Bottom and Persistently Lowest Achieving Schools List. Overview Briefing: MDE August 23, 2011. Top to Bottom (TTB) versus Persistently Lowest Achieving (PLA).
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2011 Top to Bottom and Persistently Lowest Achieving Schools List Overview Briefing: MDE August 23, 2011
Top to Bottom (TTB) versus Persistently Lowest Achieving (PLA) • Top to Bottom Ranking: Ranking of all schools in the state, based on proficiency, improvement and achievement gap in all five tested subjects. • PLA List: List of the schools identified as Persistently Low Achieving Schools (PLA schools) following a set of federal guidelines
Why are we publishing both? • TTB Ranking • Includes ALL schools • Represents MDE’s preferred methodology, developed in collaboration with stakeholders • Three rounds of public hearings • Three State Board of Education presentations • Referent group feedback • Multiple presentations to stakeholder groups (30+ presentations) • Provides increased light of day for a larger number of low-performing schools • Changes made to reflect feedback and recommendations from stakeholders
Why are we publishing both? • PLA list • State statute ties our identification of PLA schools to the approved business rules for the School Improvement Grant program. • Attempted to obtain waiver from USED; waiver denied. • Would not approve new rules because of USED timelines • Must use currently approved federal rules for identification of PLA schools
Z-Score “Cheat Sheet” • Z-scores are a standardized measure that helps you compare individual student (or school) data to state average data. Student z-score = (Student Scale Score) – (Statewide average of scale scores) Standard Deviation of Scale Score School z-score= (School Value) – (Statewide average of that value) Standard deviation of that value
Z-Score “Cheat Sheet” • Z-scores are centered around zero • Positive numbers mean the student or school is above the state average • Negative numbers mean the student or school is below the state average State Average …Worse than state average Better than state average…. 1 -3 -2 0 2 3 -1
Z-Score Examples • Your school has a z-score of 1.5. You are better than the state average. Z-score of 1.5 State Average …Worse than state average Better than state average…. 1 -3 -2 0 2 3 -1
Z-Score Examples • Your school has a z-score of .2. You are better than the state average, but not by a lot. Z-score of 0.2 Z-score of 1.5 State Average …Worse than state average Better than state average…. 1 -3 -2 0 2 3 -1
Z-Score Examples • Your school has a z-score of -2.0. You are very far below state average. Z-score of -2.0 Z-score of 0.2 Z-score of 1.5 State Average …Worse than state average Better than state average…. 1 -3 -2 0 2 3 -1
TTB Overview • Prezi presentation • Will contain voiceover • Interactive Overview of TTB Ranking
Using the “Brackets” Tool • Created a tool to help schools walk through their own data. • Will post this on the website. • Will send this out to all of you after this presentation so you can try it out ahead of time. • TTB Brackets Display
On 2011 PLA; Not on Lowest 5% • Highest rank of these schools: 64th percentile (University High) • Lowest rank: 5th percentile
Why are some schools on the PLA list but ranked higher than 5th percentile in TTB? • Differences in ranking methodology; most significantly: • Only math and reading in PLA rules; all five subjects in TTB. • Graduation rate in TTB ranking • Tiers used in PLA • Tier 1: Receiving Title I, failing AYP • Tier 2: Eligible for Title I, secondary school
Are you comparing “apples to apples?” • Improvements in TTB to ensure we are comparing students and schools more equally • Translating student scale scores into z-scores instead of into performance levels; compares students to like students. • Z-scores on school measures compare elementary/middle schools to other elementary/middle schools, and high schools to other high schools.
High-performing schools are disadvantaged by the ranking • Included “ceiling effects” provisions • Schools with over 90% of students proficient are ranked on achievement and gap only • Students who are previously proficient who maintain are counted as improving • Graduation rate over 90%; do not look at improvement, only rate.
The inclusion of achievement gap hurts high performing schools • High performing schools who do not ensure all students are high-performing will have their ranking impacted • Only ¼ of final ranking • Don’t want to decrease proficiency to improve gap because achievement is ½ of ranking • Need to get serious about making sure all students are learning
This system is too complex and hard to understand • Capturing school performance requires a nuanced system. • Complexity does not decrease transparency • Transparency does not equal simplicity • Transparency does equal the ability for external verification • Transparency includes providing details on the system’s complexity • Complexity of the model has been added at the request of the field and experts to more appropriately capture school performance • MDE will support the transparency through professional learning, technical assistance, and open access to data
Questions? Concerns? What are we missing for the release plans? What additional information would you like to have available for internal usage?