Intervention Screening Report - School Groups View
As with the other dashboards, if you have created school group sets, they will be used in the School Groups view of the Intervention Screening Report. In the example below, school groups have not been created yet, so the schools are grouped by their median SGPs (High SGP = 66 or higher, Moderate SGP = 35–65, Low SGP = 34 or lower).
Each school has a percentage of its students in each of the district benchmark categories. Each group averages those percentages from all the schools within the group; those averages are what appear in the chart. By charting the average of the percentages (instead of just the percent of students in each benchmark category), the size of the school becomes irrelevant.
Imagine one school group made up of three schools:
- School A (10 students),
- School B (100 students), and
- School C (1,000 students),
with four district benchmark categories in place. Obviously, the number
of students falling into each benchmark category will differ greatly between schools because of the huge difference in the number of students at each school; but, in this example, the percentage
of students falling into each benchmark category also differs greatly between schools:
Averaging the number of students in each district benchmark category:
- At/Above = (6 + 31 + 170) / 1,110 = 19%
- On Watch = (3 + 22 + 210) / 1,110 = 21%
- Intervention = (1 + 29 + 200) / 1,110 = 21%
- Urgent Intervention = (0 + 18 + 420) / 1,110 = 39%
Averaging the percentages of students in each district benchmark category (the calculation used in the dashboards):
- At/Above = (60% + 31% + 17%) / 3 = 36%
- On Watch = (30% + 22% + 21%) / 3 = 24%
- Intervention = (10% + 29% + 20%) / 3 = 20%
- Urgent Intervention = (0% + 18% + 42%) / 3 = 20%
In the first set of calculations, the number of students in School C is overwhelming the data from Schools A and B, making it appear that overall, the students in all the schools in this school group are performing poorly, with 39% of them performing at the Urgent Intervention level. In fact, Urgent Intervention students make up the smallest percentage at School B, and School A has no students performing at that level. By averaging the percentages, the sizes of the schools' populations cease to be a factor.