Connecting Principal Evaluation to Student Academic Progress

1. Connecting Principal Evaluation to Student Academic Progress Student Growth Percentiles (SGPs)

2. Student Growth Percentile (SGP) Model What should we know when including student growth percentiles in a principal’s performance evaluation?

3. Student Growth Percentile (SGP) Characteristics • Percentiles express the percentage of students that fall below a certain score • SGPs are reported between 1 and 99. • Higher numbers represent higher growth and lower numbers represent lower growth. • Uncorrelated with prior achievement • Low achieving students can show high growth. • High achieving students can show low growth.

4. What Do Percentiles Mean? 99th Percentile 99% of students with a similar achievement history scored lower Percentiles express the percentage of students that fall below a certain score 50th Percentile 50% of students with a similar achievement history scored lower 1% of students with a similar achievement history scored lower 1st Percentile

5. Student Growth Percentile (SGP)Levels Low Moderate High 1 34 35 65 66 99 To help interpret Student Growth Percentiles, the Virginia Department of Education established categorical growth levels of low, moderate, and high. These data are reported with the growth data for your division or school. Low growth: represents students with SGPs of 1 to 34. Moderate growth: includes students with SGPs of 35 to 65. High growth: represents students with SGPs of 66 to 99.

6. Student Growth Percentile (SGP) Considerations • Before using the median SGP as 20 percent of a principal’s evaluation, it is important to determine whether sufficient student growth percentile data are available to apply to the evaluation. Minimum requirement for sufficient data are: • Data from at least 40 students are available, possibly • from multiple years; • Data from students are representative of students in the • school; and • Data from at least two years are available; three years • should be reviewed whenever possible.

7. Student Growth Percentile (SGP) Considerations When there are insufficient SGPs to be representative of students in the school, it may still be appropriate to use SGPs as one component of the evaluation of student academic progress but at a lower percentage. In such cases, other validated quantitative measures of growth should be incorporated.

8. Options for Using SGP Data in Principal Performance Evaluation • School divisions may consider using • SGP data in principal performance • evaluation by calculating the following: • Median Student Growth Percentiles; and/or • Percentages of Low-, Moderate-,and High-growth Scores.

9. Decision Rules for SGPs(This is a suggested rubric for school divisions to consider using or adjusting.) *Recommend using median score when data are representative of the group being tabulated.

10. SGP Median* Score School division aggregates the SGP data at the school level to determine a progress measure (median SGP). The median SGP represents the midpoint in the distribution of student growth percentiles ─ half of students earned higher SGPs and half earned lower SGPs. * Recommend using median score when data are representative of the group being tabulated; recommend checking for distribution pattern of data before using median score (e.g., bimodal)

11. Bimodal Distribution 50th Percentile 16, 18, 22, 27, 32 68, 79, 85, 92, 95

12. Applying Decision Rules for SGPs 48th Percentile Yourtown Elementary School Mathematics Median Score of 48

13. Student Growth PercentileLevels Low Moderate High 1 34 35 65 66 99 Yourtown Elementary School Mathematics Median SGP Score of 48

14. Decision Rules for SGPs(This is a suggested rubric for school divisions to consider using or adjusting.) Median Score The Yourtown Elementary School mathematics SGP median score is 48 percent. The rating for this data point would therefore be: _____________ Proficient * Recommend using median score when data are representative of the group being tabulated; recommend checking for distribution pattern of data before using median score (e.g., bimodal)

15. SGP Low, Moderate, High Growth Scores School divisions may aggregate the SGP data at the school level to determine growth groupings. Students are classified into low-, moderate-, or high-growth groups. 16

16. Decision Rules for SGPs(This is a suggested rubric for school divisions to consider using or adjusting.) Low-, Moderate-, and High-Groupings

17. SGP High-, Medium-, Low-Groupings Example Yourtown Elementary School Mathematics SGP Scores This table illustrates how data from mathematics assessments for two years may be viewed to support making determinations from SGP data. Total percentages may not always equal 100 percent due to rounding. * Seven percent of SGP data was missing in 2010-2011 and three percent in 2011-2012.

18. Applying Low-, Moderate-, and High-Growth Decision Rules to SGP Scores • Yourtown Middle School distribution of SGPs for mathematics: • Low = 24 percent • Moderate = 38 percent • High = 33 percent • Add moderate and high growth • 38% + 33% = 71% • Apply this result to the decision rules

19. Applying Decision Rules for SGPs(This is a suggested rubric for school divisions to consider using or adjusting.) Low, Moderate, and High Groupings Yourtown Middle School distribution of SGPs for mathematics: Moderate + High = 71% Low = 24% Rating for Data Point = Proficient

20. Final Thoughts on Using Student Growth Percentiles • Use SGP data when available and appropriate. • Interpret SGP data in light of missing data. • Base final ratings on two or more years of SGP data, if a final rating is able to be determined. • Use multiple measures of student academic progress for a summative rating on Standard 7. • Base summative rating for Standard 7 upon “preponderance of evidence.”

21. Questions?