The School Ranking report gives an overall ranking to schools by using several different achievement-related measures in mathematics, English language arts, science, and social studies.
These rankings tell us how a school is doing relative to other schools throughout the state on student achievement, improvement in student achievement, and student achievement gaps. Identifying schools with high achievement gaps is a critical step toward Michigan achieving its overriding goal of closing the achievement gap within schools and reducing the achievement gap statewide. Additionally, identifying schools with low achievement and/or high achievement gaps allows schools to target their resources to areas that need the most improvement.
The School Ranking methodology is also used to recognize Reward Schools for the high or highly improving achievement. Reward Schools consist of schools that were identified in one of three ways: 1) top five percent of schools on the overall School Ranking, 2) top five percent of schools making the greatest gains in achievement (improvement metric), or 3) "Beating the Odds."
View the At-A-Glance School Rankings and Reward School Status for more information.
Why It Matters:
The School Ranking report may be used to answer questions such as these:
How does my school compare to the rest of the state?
Look at the overall percentile ranking. A school at the 50th percentile is doing better than 50% of Michigan public schools.
How do my school's 3rd graders compare to the neighboring district? To the state overall?
The school ranking methodology ranks schools not individual students.
In what content areas do we need to improve?
Each content area will have three z-scores. One each for achievement average, improvement, and achievement gap. Compare these values with corresponding values in other content areas will help you focus resources on closing the widest gaps, bolstering student achievement, and increasing the rate of improvement.
Each content area has a weighted index calculated from the three components. The weighted index is compared with other similar schools in the same content area and a content area z-score is calculated.
A school-level weighted index is created using all content areas for which a z-score was calculated. The content area weights are divided equally amongst the number of content areas present in a school's ranking calculations.
Finally, the school-level index is standardized with all other calculated school indices. A final z-score is calculated and ranked into an overall percentile rank.
Schools only receive a ranking when they have at least 30 students enrolled for a full academic year (FAY) in at least two content areas.
Components within content areas for the overall ranking are weighted 50% achievement and 50% improvement. In these cases the weighting is 67% achievement and 33% gap. The improvement component is not used in these cases.
Data Definitions Achievement – proficiency is averaged over two years. Z-scores are calculated for the student level and the school level. Student level z-scores measure where an individual student’s score lies compared to other student scores in the same grade level taking the same test (ex. 4th grade M-STEP math). School level z-scores compare a school’s two year average score to other similar schools’ scores in the same content area.
Improvement – student growth percentiles (SGPs) are used for all subjects in grades 4-11 where available.
Gap – achievement gap is calculated by subtracting the top 30% of z-scores from the bottom 30% of z-scores.
Z-score - a standardized measure that helps you compare individual student (or school) data to state average data. A Z-score of 0 means the measure is at the state average. A Z-score of 1 means you are one standard deviation above the state average. Negative Z-scores denote a value below the state average.
Student-level z-score – A z-score calculated using student scores from the same test.
School-level z-score – A z-score calculated using scores from the same content area for similar schools. School Detail Percentile Designations -
Excellent - 66 and above
Above –34 to 65
Below –33 and below
School Detail z-score Designations -
Excellent –above 0.5
Above –0.5 to 0.5
The Statewide Data for Report file provides data for the most recent year. To access data for previous
years at the statewide level please use the School Data File.
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