D. W. Babcock Elementary (Data source)
Source data for D. W. Babcock 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 | 1907144 | 2380 | - | 2436 | = | -56 | * | (45 | / | 177) | = | -14.23728813 | ||
| 4 | 1907145 | 2412 | - | 2485 | = | -73 | * | (36 | / | 177) | = | -14.84745759 | ||
| 5 | 1907148 | 2432 | - | 2528 | = | -96 | * | (50 | / | 177) | = | -27.118644 | ||
| 6 | 1907149 | 2460 | - | 2552 | = | -92 | * | (46 | / | 177) | = | -23.90960446 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for D. W. Babcock Elementary | -80 | ||||||||||||
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 | 58722 | 2400 | - | 2436 | = | -36 | * | (56 | / | 198) | = | -10.18181815 | ||
| 4 | 58724 | 2431 | - | 2485 | = | -54 | * | (57 | / | 198) | = | -15.5454545 | ||
| 5 | 58727 | 2445 | - | 2528 | = | -83 | * | (31 | / | 198) | = | -12.99494945 | ||
| 6 | 58729 | 2443 | - | 2552 | = | -109 | * | (54 | / | 198) | = | -29.72727265 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for D. W. Babcock Elementary | -68 | ||||||||||||
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 | 60436 | 2403 | - | 2436 | = | -33 | * | (63 | / | 218) | = | -9.53669723 | ||
| 4 | 60438 | 2427 | - | 2485 | = | -58 | * | (58 | / | 218) | = | -15.43119261 | ||
| 5 | 60440 | 2451 | - | 2528 | = | -77 | * | (63 | / | 218) | = | -22.25229353 | ||
| 6 | 60441 | 2457 | - | 2552 | = | -95 | * | (34 | / | 218) | = | -14.81651369 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for D. W. Babcock Elementary | -62 | ||||||||||||
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 | 60561 | 2415 | - | 2436 | = | -21 | * | (52 | / | 211) | = | -5.17535544 | ||
| 4 | 60563 | 2430 | - | 2485 | = | -55 | * | (57 | / | 211) | = | -14.8578199 | ||
| 5 | 60565 | 2473 | - | 2528 | = | -55 | * | (49 | / | 211) | = | -12.77251184 | ||
| 6 | 60567 | 2448 | - | 2552 | = | -104 | * | (53 | / | 211) | = | -26.12322274 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for D. W. Babcock Elementary | -59 | ||||||||||||
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 | 60812 | 2390 | - | 2436 | = | -46 | * | (39 | / | 185) | = | -9.69729726 | ||
| 4 | 60813 | 2441 | - | 2485 | = | -44 | * | (47 | / | 185) | = | -11.17837838 | ||
| 5 | 60814 | 2429 | - | 2528 | = | -99 | * | (54 | / | 185) | = | -28.89729721 | ||
| 6 | 60815 | 2478 | - | 2552 | = | -74 | * | (45 | / | 185) | = | -17.99999998 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for D. W. Babcock Elementary | -68 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -80 | -68 | -62 | -59 | -68 | -337.0 | -67.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -43.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -91.4
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 | 92% | 89% | 90% | 88% | 92% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Twin Rivers Unified school district | County of Sacramento
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.
D. W. Babcock Elementary math proficiency
Zero+ meets standard.
86% less $meal
84% less $meal
84% less $meal
84% less $meal
86% 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.