Cogswell Elementary (Data source)
Source data for Cogswell 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 | 1041164 | 2413 | - | 2436 | = | -23 | * | (67 | / | 262) | = | -5.88167937 | ||
| 4 | 1041167 | 2427 | - | 2485 | = | -58 | * | (68 | / | 262) | = | -15.05343507 | ||
| 5 | 1041168 | 2423 | - | 2528 | = | -105 | * | (63 | / | 262) | = | -25.24809158 | ||
| 6 | 1041171 | 2462 | - | 2552 | = | -90 | * | (64 | / | 262) | = | -21.98473281 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cogswell Elementary | -68 | ||||||||||||
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 | 32690 | 2392 | - | 2436 | = | -44 | * | (69 | / | 262) | = | -11.58778623 | ||
| 4 | 32693 | 2471 | - | 2485 | = | -14 | * | (68 | / | 262) | = | -3.63358778 | ||
| 5 | 32694 | 2480 | - | 2528 | = | -48 | * | (64 | / | 262) | = | -11.72519083 | ||
| 6 | 32697 | 2436 | - | 2552 | = | -116 | * | (61 | / | 262) | = | -27.00763353 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cogswell Elementary | -54 | ||||||||||||
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 | 33268 | 2417 | - | 2436 | = | -19 | * | (80 | / | 271) | = | -5.60885609 | ||
| 4 | 33270 | 2430 | - | 2485 | = | -55 | * | (68 | / | 271) | = | -13.800738 | ||
| 5 | 33272 | 2494 | - | 2528 | = | -34 | * | (65 | / | 271) | = | -8.15498153 | ||
| 6 | 33275 | 2494 | - | 2552 | = | -58 | * | (58 | / | 271) | = | -12.41328412 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cogswell Elementary | -40 | ||||||||||||
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 | 33289 | 2403 | - | 2436 | = | -33 | * | (58 | / | 269) | = | -7.11524161 | ||
| 4 | 33291 | 2478 | - | 2485 | = | -7 | * | (81 | / | 269) | = | -2.10780669 | ||
| 5 | 33293 | 2422 | - | 2528 | = | -106 | * | (66 | / | 269) | = | -26.00743485 | ||
| 6 | 33295 | 2516 | - | 2552 | = | -36 | * | (64 | / | 269) | = | -8.56505574 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cogswell Elementary | -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 |
||
| 3 | 33461 | 2456 | - | 2436 | = | 20 | * | (64 | / | 249) | = | 5.14056224 | ||
| 4 | 33462 | 2465 | - | 2485 | = | -20 | * | (53 | / | 249) | = | -4.2570281 | ||
| 5 | 33463 | 2488 | - | 2528 | = | -40 | * | (71 | / | 249) | = | -11.40562248 | ||
| 6 | 33464 | 2497 | - | 2552 | = | -55 | * | (61 | / | 249) | = | -13.47389555 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cogswell Elementary | -24 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -68 | -54 | -40 | -44 | -24 | -230.0 | -46.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 2.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -94.0
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 | 96% | 92% | 96% | 95% | 96% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Mountain View Elementary school district | County of Los Angeles
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.
Cogswell Elementary math proficiency
Zero+ meets standard.
92% less $meal
87% less $meal
92% less $meal
93% less $meal
88% 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.