Alcott Elementary (Data source)
Source data for Alcott 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 | 1090794 | 2412 | - | 2436 | = | -24 | * | (133 | / | 566) | = | -5.63957597 | ||
| 4 | 1090797 | 2431 | - | 2485 | = | -54 | * | (138 | / | 566) | = | -13.16607772 | ||
| 5 | 1090798 | 2434 | - | 2528 | = | -94 | * | (161 | / | 566) | = | -26.73851582 | ||
| 6 | 1090801 | 2455 | - | 2552 | = | -97 | * | (134 | / | 566) | = | -22.96466425 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Alcott Elementary | -69 | ||||||||||||
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 | 34139 | 2420 | - | 2436 | = | -16 | * | (120 | / | 534) | = | -3.59550562 | ||
| 4 | 34141 | 2424 | - | 2485 | = | -61 | * | (134 | / | 534) | = | -15.30711607 | ||
| 5 | 34143 | 2447 | - | 2528 | = | -81 | * | (130 | / | 534) | = | -19.71910105 | ||
| 6 | 34146 | 2457 | - | 2552 | = | -95 | * | (150 | / | 534) | = | -26.68539322 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Alcott Elementary | -65 | ||||||||||||
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 | 34751 | 2402 | - | 2436 | = | -34 | * | (113 | / | 494) | = | -7.77732793 | ||
| 4 | 34753 | 2413 | - | 2485 | = | -72 | * | (128 | / | 494) | = | -18.65587039 | ||
| 5 | 34755 | 2441 | - | 2528 | = | -87 | * | (137 | / | 494) | = | -24.12753035 | ||
| 6 | 34758 | 2470 | - | 2552 | = | -82 | * | (116 | / | 494) | = | -19.25506067 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Alcott Elementary | -70 | ||||||||||||
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 | 34761 | 2405 | - | 2436 | = | -31 | * | (114 | / | 471) | = | -7.5031847 | ||
| 4 | 34763 | 2406 | - | 2485 | = | -79 | * | (111 | / | 471) | = | -18.61783433 | ||
| 5 | 34765 | 2432 | - | 2528 | = | -96 | * | (124 | / | 471) | = | -25.27388534 | ||
| 6 | 34767 | 2468 | - | 2552 | = | -84 | * | (122 | / | 471) | = | -21.75796174 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Alcott Elementary | -73 | ||||||||||||
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 | 34937 | 2411 | - | 2436 | = | -25 | * | (118 | / | 460) | = | -6.41304348 | ||
| 4 | 34938 | 2440 | - | 2485 | = | -45 | * | (118 | / | 460) | = | -11.54347826 | ||
| 5 | 34939 | 2423 | - | 2528 | = | -105 | * | (104 | / | 460) | = | -23.73913038 | ||
| 6 | 34940 | 2443 | - | 2552 | = | -109 | * | (120 | / | 460) | = | -28.43478259 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Alcott Elementary | -70 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -69 | -65 | -70 | -73 | -70 | -347.0 | -69.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -63.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -75.4
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 | 95% | 95% | 94% | 94% | 93% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Pomona Unified 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.
Alcott Elementary math proficiency
Zero+ meets standard.
86% less $meal
85% less $meal
84% less $meal
88% less $meal
85% 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.