Cobblestone Elementary (Data source)
Source data for Cobblestone Elementary
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 |
||
| 3 | 1628173 | 2435 | - | 2436 | = | -1 | * | (53 | / | 235) | = | -0.22553191 | ||
| 4 | 1628176 | 2464 | - | 2485 | = | -21 | * | (60 | / | 235) | = | -5.36170211 | ||
| 5 | 1628177 | 2512 | - | 2528 | = | -16 | * | (61 | / | 235) | = | -4.15319149 | ||
| 6 | 1628180 | 2539 | - | 2552 | = | -13 | * | (61 | / | 235) | = | -3.37446808 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cobblestone Elementary | -13 | ||||||||||||
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 |
||
| 3 | 50897 | 2441 | - | 2436 | = | 5 | * | (54 | / | 242) | = | 1.11570248 | ||
| 4 | 50898 | 2497 | - | 2485 | = | 12 | * | (63 | / | 242) | = | 3.12396694 | ||
| 5 | 50900 | 2513 | - | 2528 | = | -15 | * | (61 | / | 242) | = | -3.78099173 | ||
| 6 | 50902 | 2571 | - | 2552 | = | 19 | * | (64 | / | 242) | = | 5.02479337 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cobblestone Elementary | 5 | ||||||||||||
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 |
||
| 3 | 52357 | 2463 | - | 2436 | = | 27 | * | (55 | / | 240) | = | 6.18749998 | ||
| 4 | 52358 | 2485 | - | 2485 | = | 0 | * | (64 | / | 240) | = | 0.0 | ||
| 5 | 52360 | 2533 | - | 2528 | = | 5 | * | (62 | / | 240) | = | 1.29166667 | ||
| 6 | 52363 | 2566 | - | 2552 | = | 14 | * | (59 | / | 240) | = | 3.44166666 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cobblestone Elementary | 11 | ||||||||||||
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 |
||
| 3 | 52423 | 2454 | - | 2436 | = | 18 | * | (53 | / | 233) | = | 4.0944206 | ||
| 4 | 52424 | 2506 | - | 2485 | = | 21 | * | (53 | / | 233) | = | 4.77682403 | ||
| 5 | 52427 | 2530 | - | 2528 | = | 2 | * | (63 | / | 233) | = | 0.54077253 | ||
| 6 | 52428 | 2570 | - | 2552 | = | 18 | * | (64 | / | 233) | = | 4.944206 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cobblestone Elementary | 14 | ||||||||||||
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 |
||
| 3 | 52598 | 2460 | - | 2436 | = | 24 | * | (51 | / | 222) | = | 5.5135135 | ||
| 4 | 52599 | 2511 | - | 2485 | = | 26 | * | (54 | / | 222) | = | 6.32432432 | ||
| 5 | 52600 | 2547 | - | 2528 | = | 19 | * | (61 | / | 222) | = | 5.22072071 | ||
| 6 | 52601 | 2574 | - | 2552 | = | 22 | * | (56 | / | 222) | = | 5.54954954 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cobblestone Elementary | 23 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -13 | 5 | 11 | 14 | 23 | 40.0 | 8.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 47.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -31.0
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 | 26% | 21% | 19% | 20% | 17% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Rocklin Unified school district | County of Placer
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.
Cobblestone Elementary math proficiency
Zero+ meets standard.
18% less $meal
14% less $meal
13% less $meal
15% less $meal
12% less $meal
• Any result above zero is proficient; below is not proficient. • There is a 99% chance that results will remain the same in coming years, which is to say, between the Upper and Lower Control Limits (the gray lines). • The houses with the % of students receiving a Free or Reduced Price Meal is a measure of wealth/poverty.