Westport Elementary (Data source)
Source data for Westport 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 | 2923075 | 2403 | - | 2436 | = | -33 | * | (69 | / | 249) | = | -9.14457829 | ||
| 4 | 2923078 | 2410 | - | 2485 | = | -75 | * | (56 | / | 249) | = | -16.86746985 | ||
| 5 | 2923079 | 2440 | - | 2528 | = | -88 | * | (63 | / | 249) | = | -22.26506022 | ||
| 6 | 2923082 | 2524 | - | 2552 | = | -28 | * | (61 | / | 249) | = | -6.85943773 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Westport Elementary | -55 | ||||||||||||
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 | 89480 | 2409 | - | 2436 | = | -27 | * | (69 | / | 246) | = | -7.57317071 | ||
| 4 | 89481 | 2423 | - | 2485 | = | -62 | * | (59 | / | 246) | = | -14.86991868 | ||
| 5 | 89483 | 2439 | - | 2528 | = | -89 | * | (59 | / | 246) | = | -21.34552842 | ||
| 6 | 89485 | 2504 | - | 2552 | = | -48 | * | (59 | / | 246) | = | -11.5121951 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Westport Elementary | -55 | ||||||||||||
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 | 92085 | 2407 | - | 2436 | = | -29 | * | (65 | / | 247) | = | -7.63157893 | ||
| 4 | 92088 | 2440 | - | 2485 | = | -45 | * | (64 | / | 247) | = | -11.659919 | ||
| 5 | 92090 | 2428 | - | 2528 | = | -100 | * | (61 | / | 247) | = | -24.6963562 | ||
| 6 | 92092 | 2471 | - | 2552 | = | -81 | * | (57 | / | 247) | = | -18.69230763 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Westport Elementary | -63 | ||||||||||||
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 | 92286 | 2418 | - | 2436 | = | -18 | * | (65 | / | 243) | = | -4.8148148 | ||
| 4 | 92289 | 2459 | - | 2485 | = | -26 | * | (60 | / | 243) | = | -6.41975308 | ||
| 5 | 92290 | 2444 | - | 2528 | = | -84 | * | (58 | / | 243) | = | -20.04938267 | ||
| 6 | 92293 | 2481 | - | 2552 | = | -71 | * | (60 | / | 243) | = | -17.53086418 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Westport Elementary | -49 | ||||||||||||
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 | 92932 | 2436 | - | 2436 | = | 0 | * | (64 | / | 244) | = | 0.0 | ||
| 4 | 92933 | 2440 | - | 2485 | = | -45 | * | (56 | / | 244) | = | -10.32786882 | ||
| 5 | 92934 | 2454 | - | 2528 | = | -74 | * | (62 | / | 244) | = | -18.80327864 | ||
| 6 | 92935 | 2454 | - | 2552 | = | -98 | * | (62 | / | 244) | = | -24.90163928 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Westport Elementary | -54 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -55 | -55 | -63 | -49 | -54 | -276.0 | -55.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -40.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -70.2
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 | 92% | 90% | 94% | 90% | 92% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Ceres Unified school district | County of Stanislaus
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.
Westport Elementary math proficiency
Zero+ meets standard.
86% less $meal
83% less $meal
85% less $meal
88% 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.