<p>5 Most Common SLO Growth Target Format Examples: May, 2016</p><p>Allowable formats (subject to evaluator approval): </p><p>1. Half-the-Gap Formula: </p><p>Growth Target = ½ (100 – Pre-Assessment Score) </p><p>All students will increase their scores by one half the difference between 100 and the pre-assessment score. </p><p>Example: a student who received a rating of 50% on the pre-assessment would be expected to receive a rating of 75% on the post-assessment. </p><p>½ (100 – 50) = 25 pts. </p><p>Pre-Assessment Score: 50%</p><p>Growth Target: 25 pts.</p><p>Post-Assessment target score: 75%</p><p>2. Half-the-Gap Hybrid Formula: </p><p>For use when using the Half-the-Gap formula results in post-assessment score expectations that are significantly less rigorous that would be expected based on historical data with the assessment and/or teacher experience with the content. This is a two-part format.</p><p>Example: A pre-assessment for an AP Chemistry course results in no students scoring higher than 24%. The teacher expects most students to score at least 70% on the post-assessment in the Spring. Using half-the-gap formula would result in the expectation that student score no higher than 62%.</p><p>1. Students with a pre-assessment score of less than 40% will have a growth target that will result in post-assessment score of 70%</p><p>Growth Target = (70 – Pre-Assessment Score)</p><p>Ex: Pre-Assessment score of 20% Growth target = (70 – 20) Growth target = 50 points (target score: 20 + 50 = 70%)</p><p>2. Students with a Pre-Assessment score of 40% or higher: use half-the-gap formula:</p><p>Growth Target = ½(100 – Pre-Assessment Score) Ex: Pre-Assessment score of 44% Growth target = ½ (100 – 44) Growth target = 28 points (target score: 44 + 28 = 72%) 3. District-Set for instrument:</p><p>All students with same pre-assessment score will have the same growth target, across the district. </p><p>Example: District sets growth targets for kindergarteners using Aimsweb </p><p>4. Test-Provided: </p><p>Test vendor sets growth targets based on pre-assessment scores</p><p>Example: NWEA set Fall to Spring math growth targets for each student in Grade 6</p><p>5. PGR:</p><p>SLO rating determined by the percentage of the gap reduced between the class’ mean Pre-Assessment score and the maximum score set.</p><p>Step 1: Determine Mean Performance Gap (Difference between the maximum score and the class’ mean Pre- Assessment score.) </p><p>Example: Mean average Pre-Assessment score for all students in the course: 54 pts.</p><p>Step 2: Determine the Mean Performance Growth (Difference between class’ mean Post-Assessment score and the class’ mean Pre-Assessment score)</p><p>Example: Mean average Post-Assessment score for all students in the course: 84%</p><p>84 – 54 = 30 pt. (mean performance growth)</p><p>Step 3: Determine Percent Gap Reduction ((mean performance growth) divided by (mean performance gap) multiplied by 100))</p><p>Example: (30 ÷ 46) = 0.65 x 100 = 65% gap reduction (SLO rating – 3.0; see chart below)</p><p>PGR SLO Rating Scale: </p><p>Mean Gap Reduction Rating 75% or higher 4 50-74.4% 3 25-49.4% 2 25.4% or less 1 *District may want to refine the rating chart using tenths </p>