Peres Elementary (Data source)
Source data for Peres 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 | 239026 | 2381 | - | 2436 | = | -55 | * | (81 | / | 293) | = | -15.20477811 | ||
| 4 | 239029 | 2453 | - | 2485 | = | -32 | * | (74 | / | 293) | = | -8.08191123 | ||
| 5 | 239030 | 2436 | - | 2528 | = | -92 | * | (74 | / | 293) | = | -23.23549479 | ||
| 6 | 239033 | 2455 | - | 2552 | = | -97 | * | (64 | / | 293) | = | -21.1877133 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Peres 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 | 7007 | 2357 | - | 2436 | = | -79 | * | (76 | / | 287) | = | -20.9198606 | ||
| 4 | 7010 | 2435 | - | 2485 | = | -50 | * | (79 | / | 287) | = | -13.7630662 | ||
| 5 | 7012 | 2471 | - | 2528 | = | -57 | * | (63 | / | 287) | = | -12.51219512 | ||
| 6 | 7014 | 2434 | - | 2552 | = | -118 | * | (69 | / | 287) | = | -28.36933792 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Peres Elementary | -76 | ||||||||||||
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 | 7219 | 2393 | - | 2436 | = | -43 | * | (73 | / | 288) | = | -10.89930555 | ||
| 4 | 7221 | 2405 | - | 2485 | = | -80 | * | (82 | / | 288) | = | -22.77777776 | ||
| 5 | 7223 | 2451 | - | 2528 | = | -77 | * | (77 | / | 288) | = | -20.58680555 | ||
| 6 | 7226 | 2462 | - | 2552 | = | -90 | * | (56 | / | 288) | = | -17.49999996 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Peres Elementary | -72 | ||||||||||||
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 | 7238 | 2365 | - | 2436 | = | -71 | * | (69 | / | 274) | = | -17.87956201 | ||
| 4 | 7239 | 2439 | - | 2485 | = | -46 | * | (75 | / | 274) | = | -12.59124084 | ||
| 5 | 7242 | 2408 | - | 2528 | = | -120 | * | (71 | / | 274) | = | -31.09489044 | ||
| 6 | 7243 | 2487 | - | 2552 | = | -65 | * | (59 | / | 274) | = | -13.99635036 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Peres Elementary | -76 | ||||||||||||
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 | 7287 | 2385 | - | 2436 | = | -51 | * | (68 | / | 303) | = | -11.44554454 | ||
| 4 | 7288 | 2406 | - | 2485 | = | -79 | * | (63 | / | 303) | = | -16.42574257 | ||
| 5 | 7289 | 2457 | - | 2528 | = | -71 | * | (65 | / | 303) | = | -15.23102309 | ||
| 6 | 7290 | 2444 | - | 2552 | = | -108 | * | (66 | / | 303) | = | -23.52475246 | ||
| 7 | 7291 | 2453 | - | 2567 | = | -114 | * | (41 | / | 303) | = | -15.42574253 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Peres Elementary | -82 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -68 | -76 | -72 | -76 | -82 | -374.0 | -74.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -59.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -89.8
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 | 99% | 97% | 96% | 93% | 96% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
West Contra Costa Unified school district | County of Contra Costa
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.
Peres Elementary math proficiency
Zero+ meets standard.
94% less $meal
91% less $meal
89% less $meal
86% 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.