Wittmann (Helen) Elementary (Data source)
Source data for Wittmann (Helen) 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 | 612446 | 2494 | - | 2436 | = | 58 | * | (76 | / | 343) | = | 12.85131195 | ||
| 4 | 612447 | 2531 | - | 2485 | = | 46 | * | (87 | / | 343) | = | 11.66763844 | ||
| 5 | 612450 | 2551 | - | 2528 | = | 23 | * | (98 | / | 343) | = | 6.57142856 | ||
| 6 | 612451 | 2605 | - | 2552 | = | 53 | * | (82 | / | 343) | = | 12.67055392 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Wittmann (Helen) Elementary | 44 | ||||||||||||
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 | 19606 | 2482 | - | 2436 | = | 46 | * | (85 | / | 348) | = | 11.23563216 | ||
| 4 | 19608 | 2523 | - | 2485 | = | 38 | * | (73 | / | 348) | = | 7.97126433 | ||
| 5 | 19610 | 2569 | - | 2528 | = | 41 | * | (90 | / | 348) | = | 10.60344825 | ||
| 6 | 19611 | 2601 | - | 2552 | = | 49 | * | (100 | / | 348) | = | 14.08045973 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Wittmann (Helen) Elementary | 44 | ||||||||||||
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 | 19900 | 2504 | - | 2436 | = | 68 | * | (61 | / | 327) | = | 12.68501526 | ||
| 4 | 19902 | 2521 | - | 2485 | = | 36 | * | (98 | / | 327) | = | 10.7889908 | ||
| 5 | 19904 | 2556 | - | 2528 | = | 28 | * | (77 | / | 327) | = | 6.59327217 | ||
| 6 | 19905 | 2613 | - | 2552 | = | 61 | * | (91 | / | 327) | = | 16.97553512 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Wittmann (Helen) Elementary | 47 | ||||||||||||
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 | 19898 | 2496 | - | 2436 | = | 60 | * | (77 | / | 333) | = | 13.87387386 | ||
| 4 | 19900 | 2529 | - | 2485 | = | 44 | * | (74 | / | 333) | = | 9.77777777 | ||
| 5 | 19902 | 2552 | - | 2528 | = | 24 | * | (96 | / | 333) | = | 6.91891891 | ||
| 6 | 19904 | 2597 | - | 2552 | = | 45 | * | (86 | / | 333) | = | 11.62162161 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Wittmann (Helen) Elementary | 42 | ||||||||||||
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 | 20083 | 2506 | - | 2436 | = | 70 | * | (93 | / | 350) | = | 18.59999995 | ||
| 4 | 20084 | 2546 | - | 2485 | = | 61 | * | (80 | / | 350) | = | 13.94285711 | ||
| 5 | 20085 | 2560 | - | 2528 | = | 32 | * | (76 | / | 350) | = | 6.94857142 | ||
| 6 | 20086 | 2580 | - | 2552 | = | 28 | * | (101 | / | 350) | = | 8.07999998 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Wittmann (Helen) Elementary | 48 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 44 | 44 | 47 | 42 | 48 | 225.0 | 45.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 51.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 39.0
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 | 26% | 28% | 24% | 27% | 25% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
ABC 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.
Wittmann (Helen) Elementary math proficiency
Zero+ meets standard.
19% less $meal
20% less $meal
18% less $meal
21% less $meal
20% 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.