Allison Elementary (Data source)
Source data for Allison 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 | 1091138 | 2380 | - | 2436 | = | -56 | * | (54 | / | 192) | = | -15.75 | ||
| 4 | 1091141 | 2412 | - | 2485 | = | -73 | * | (50 | / | 192) | = | -19.01041662 | ||
| 5 | 1091142 | 2413 | - | 2528 | = | -115 | * | (36 | / | 192) | = | -21.5625 | ||
| 6 | 1091145 | 2430 | - | 2552 | = | -122 | * | (52 | / | 192) | = | -33.04166663 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Allison Elementary | -89 | ||||||||||||
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 | 34150 | 2388 | - | 2436 | = | -48 | * | (53 | / | 176) | = | -14.45454542 | ||
| 4 | 34152 | 2423 | - | 2485 | = | -62 | * | (46 | / | 176) | = | -16.20454543 | ||
| 5 | 34153 | 2458 | - | 2528 | = | -70 | * | (42 | / | 176) | = | -16.70454541 | ||
| 6 | 34155 | 2432 | - | 2552 | = | -120 | * | (35 | / | 176) | = | -23.86363632 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Allison Elementary | -71 | ||||||||||||
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 | 34762 | 2395 | - | 2436 | = | -41 | * | (39 | / | 169) | = | -9.46153843 | ||
| 4 | 34764 | 2443 | - | 2485 | = | -42 | * | (49 | / | 169) | = | -12.17751478 | ||
| 5 | 34765 | 2433 | - | 2528 | = | -95 | * | (50 | / | 169) | = | -28.10650886 | ||
| 6 | 34767 | 2508 | - | 2552 | = | -44 | * | (31 | / | 169) | = | -8.07100589 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Allison Elementary | -58 | ||||||||||||
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 | 34772 | 2362 | - | 2436 | = | -74 | * | (32 | / | 169) | = | -14.01183429 | ||
| 4 | 34774 | 2442 | - | 2485 | = | -43 | * | (44 | / | 169) | = | -11.19526625 | ||
| 5 | 34776 | 2450 | - | 2528 | = | -78 | * | (50 | / | 169) | = | -23.07692306 | ||
| 6 | 34778 | 2464 | - | 2552 | = | -88 | * | (43 | / | 169) | = | -22.39053247 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Allison Elementary | -71 | ||||||||||||
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 | 34947 | 2448 | - | 2436 | = | 12 | * | (44 | / | 173) | = | 3.05202312 | ||
| 4 | 34948 | 2462 | - | 2485 | = | -23 | * | (33 | / | 173) | = | -4.38728324 | ||
| 5 | 34949 | 2447 | - | 2528 | = | -81 | * | (45 | / | 173) | = | -21.06936409 | ||
| 6 | 34950 | 2485 | - | 2552 | = | -67 | * | (51 | / | 173) | = | -19.75144503 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Allison Elementary | -42 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -89 | -71 | -58 | -71 | -42 | -331.0 | -66.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -15.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -117.2
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 | 87% | 89% | 89% | 89% | 92% |
| 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.
Allison Elementary math proficiency
Zero+ meets standard.
75% less $meal
74% less $meal
74% less $meal
77% less $meal
79% 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.