Liberty Elementary (Data source)
Source data for Liberty 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 | 2068470 | 2361 | - | 2436 | = | -75 | * | (130 | / | 489) | = | -19.93865025 | ||
| 4 | 2068473 | 2405 | - | 2485 | = | -80 | * | (128 | / | 489) | = | -20.94069528 | ||
| 5 | 2068474 | 2418 | - | 2528 | = | -110 | * | (111 | / | 489) | = | -24.96932515 | ||
| 6 | 2068477 | 2475 | - | 2552 | = | -77 | * | (120 | / | 489) | = | -18.89570552 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Liberty Elementary | -85 | ||||||||||||
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 | 63550 | 2377 | - | 2436 | = | -59 | * | (125 | / | 478) | = | -15.42887028 | ||
| 4 | 63552 | 2401 | - | 2485 | = | -84 | * | (121 | / | 478) | = | -21.2635983 | ||
| 5 | 63555 | 2425 | - | 2528 | = | -103 | * | (118 | / | 478) | = | -25.42677817 | ||
| 6 | 63557 | 2482 | - | 2552 | = | -70 | * | (114 | / | 478) | = | -16.69456061 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Liberty Elementary | -79 | ||||||||||||
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 | 65349 | 2366 | - | 2436 | = | -70 | * | (144 | / | 567) | = | -17.77777771 | ||
| 4 | 65351 | 2403 | - | 2485 | = | -82 | * | (137 | / | 567) | = | -19.81305107 | ||
| 5 | 65353 | 2411 | - | 2528 | = | -117 | * | (140 | / | 567) | = | -28.88888886 | ||
| 6 | 65355 | 2459 | - | 2552 | = | -93 | * | (146 | / | 567) | = | -23.94708987 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Liberty Elementary | -90 | ||||||||||||
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 | 65433 | 2375 | - | 2436 | = | -61 | * | (159 | / | 598) | = | -16.21906351 | ||
| 4 | 65434 | 2404 | - | 2485 | = | -81 | * | (141 | / | 598) | = | -19.09866219 | ||
| 5 | 65437 | 2425 | - | 2528 | = | -103 | * | (142 | / | 598) | = | -24.45819388 | ||
| 6 | 65438 | 2466 | - | 2552 | = | -86 | * | (156 | / | 598) | = | -22.43478259 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Liberty Elementary | -82 | ||||||||||||
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 | 65822 | 2378 | - | 2436 | = | -58 | * | (157 | / | 592) | = | -15.38175672 | ||
| 4 | 65823 | 2417 | - | 2485 | = | -68 | * | (158 | / | 592) | = | -18.14864859 | ||
| 5 | 65824 | 2413 | - | 2528 | = | -115 | * | (135 | / | 592) | = | -26.2246621 | ||
| 6 | 65825 | 2471 | - | 2552 | = | -81 | * | (142 | / | 592) | = | -19.42905398 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Liberty Elementary | -79 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -85 | -79 | -90 | -82 | -79 | -415.0 | -83.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -71.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -95.0
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 | 90% | 89% | 89% | 82% | 84% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Victor Elementary school district County of San Bernardino
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Liberty Elementary math proficiency
Zero+ meets standard.
83% less $meal
85% less $meal
81% less $meal
78% less $meal
80% 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.