Teacher Value Added Model. St. Johns County School District March 23, 2012. Gains vs. Growth. Part 1. Calculating Learning Gains. For the school to earn a Learning Gain Point. (School Learning Gain Points = % of students making a Learning Gain)
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St. Johns County School District
March 23, 2012
(School Learning Gain Points = % of students making a Learning Gain)
The vast majority of the growth prediction comes from the students’ own previous test scores. One score can be used but when available, 2 previous scores are used. The most recent score carries the most weight in the prediction.
+30 = Student …….. Outcome
-10 = Student …….. Outcome
Growth expectation would be lower
Growth expectation would be higher
Both students enter the year as FCAT level 4 and leave the year at level 4.
* Value Added scores are expected to arrive the end of July.
For elementary, 4th and 5th grade teachers and the ESE teachers who support them will get their own scores (if 3 year total number of scores is above 30 for each teacher). All others will receive the school average.
NameProjected growthActual growthDifference(residual)
Robert 100 pts. 110 pts. +10Sam 65 pts. 80 pts. +15Jane 110 pts. 115 pts. +5 Average = +10
Student 1 +10
Student 2 +5
Student 3 +10
Student 4 +18
Student 5 +2
Student 6 +3
48 / 6 = 8
240/30 = 8
Ingredient # 1Ingredient # 2
(Tchcomponent) = (Stdoutcomes) - (Schcomponent)
Example from previous slides:
Tchvas= (Tchcomponent) + .5 x (Schcomponent)
Tchvas= 2 + (.5 x 8)
is provided by the state.
The calculations just discussed are not done at the district level.
(Tchvas) +/- [(.5K) x SE)] = (FTchvas)
Example for A++Range:
* Regardless of weighted Concordant Score the highest possible is a 4.0
Highly Effective Effective Needs Improvement/Developing Unsatisfactory
3.5 – 4.0 2.5 – 3.4 1.5 – 2.4 1.0 – 1.4