River Valley Charter (Data source)
Source data for River Valley Charter
2015
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 7 | 2177374 | 2575 | - | 2567 | = | 8 | * | (37 | / | 108) | = | 2.74074074 | ||
| 8 | 2177375 | 2654 | - | 2586 | = | 68 | * | (38 | / | 108) | = | 23.92592587 | ||
| 11 | 2177378 | 2702 | - | 2628 | = | 74 | * | (33 | / | 108) | = | 22.61111107 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for River Valley Charter | 49 | ||||||||||||
2016
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 7 | 66835 | 2582 | - | 2567 | = | 15 | * | (37 | / | 113) | = | 4.91150442 | ||
| 8 | 66837 | 2596 | - | 2586 | = | 10 | * | (34 | / | 113) | = | 3.00884955 | ||
| 11 | 66839 | 2656 | - | 2628 | = | 28 | * | (42 | / | 113) | = | 10.40707962 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for River Valley Charter | 18 | ||||||||||||
2017
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 7 | 68661 | 2587 | - | 2567 | = | 20 | * | (32 | / | 125) | = | 5.12 | ||
| 8 | 68663 | 2613 | - | 2586 | = | 27 | * | (35 | / | 125) | = | 7.56 | ||
| 11 | 68665 | 2665 | - | 2628 | = | 37 | * | (58 | / | 125) | = | 17.168 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for River Valley Charter | 30 | ||||||||||||
2018
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 7 | 68814 | 2573 | - | 2567 | = | 6 | * | (36 | / | 119) | = | 1.81512605 | ||
| 8 | 68816 | 2620 | - | 2586 | = | 34 | * | (36 | / | 119) | = | 10.28571427 | ||
| 11 | 68818 | 2708 | - | 2628 | = | 80 | * | (47 | / | 119) | = | 31.59663864 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for River Valley Charter | 44 | ||||||||||||
2019
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 7 | 69351 | 2574 | - | 2567 | = | 7 | * | (38 | / | 139) | = | 1.91366906 | ||
| 8 | 69352 | 2549 | - | 2586 | = | -37 | * | (49 | / | 139) | = | -13.04316545 | ||
| 11 | 69353 | 2677 | - | 2628 | = | 49 | * | (52 | / | 139) | = | 18.33093523 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for River Valley Charter | 7 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 49 | 18 | 30 | 44 | 7 | 148.0 | 29.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average:
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average:
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources:
| 2015 | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|
| Percent | 4% | 6% | 6% | 14% | 15% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lakeside Union Elementary school district | County of San Diego
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation: wealth/poverty.
NOT what teachers want.
NOT what principals want.
NOT what parents want.