Rancho Dominguez Preparatory (Data source)
Source data for Rancho Dominguez Preparatory
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 |
||
| 6 | 836843 | 2486 | - | 2552 | = | -66 | * | (98 | / | 460) | = | -14.06086955 | ||
| 7 | 836844 | 2492 | - | 2567 | = | -75 | * | (113 | / | 460) | = | -18.42391298 | ||
| 8 | 836847 | 2495 | - | 2586 | = | -91 | * | (106 | / | 460) | = | -20.96956516 | ||
| 11 | 836848 | 2526 | - | 2628 | = | -102 | * | (143 | / | 460) | = | -31.70869563 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rancho Dominguez Preparatory | -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 |
||
| 6 | 26251 | 2465 | - | 2552 | = | -87 | * | (75 | / | 416) | = | -15.68509611 | ||
| 7 | 26253 | 2514 | - | 2567 | = | -53 | * | (83 | / | 416) | = | -10.57451919 | ||
| 8 | 26255 | 2506 | - | 2586 | = | -80 | * | (105 | / | 416) | = | -20.19230768 | ||
| 11 | 26256 | 2535 | - | 2628 | = | -93 | * | (153 | / | 416) | = | -34.20432687 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rancho Dominguez Preparatory | -81 | ||||||||||||
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 |
||
| 6 | 26733 | 2478 | - | 2552 | = | -74 | * | (79 | / | 375) | = | -15.58933328 | ||
| 7 | 26735 | 2455 | - | 2567 | = | -112 | * | (67 | / | 375) | = | -20.01066659 | ||
| 8 | 26738 | 2485 | - | 2586 | = | -101 | * | (91 | / | 375) | = | -24.50933327 | ||
| 11 | 26740 | 2531 | - | 2628 | = | -97 | * | (138 | / | 375) | = | -35.696 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rancho Dominguez Preparatory | -96 | ||||||||||||
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 |
||
| 6 | 26705 | 2480 | - | 2552 | = | -72 | * | (91 | / | 353) | = | -18.5609065 | ||
| 7 | 26707 | 2478 | - | 2567 | = | -89 | * | (80 | / | 353) | = | -20.16997166 | ||
| 8 | 26709 | 2469 | - | 2586 | = | -117 | * | (59 | / | 353) | = | -19.55524077 | ||
| 11 | 26711 | 2544 | - | 2628 | = | -84 | * | (123 | / | 353) | = | -29.26912178 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rancho Dominguez Preparatory | -88 | ||||||||||||
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 |
||
| 6 | 26829 | 2506 | - | 2552 | = | -46 | * | (73 | / | 356) | = | -9.43258423 | ||
| 7 | 26830 | 2486 | - | 2567 | = | -81 | * | (99 | / | 356) | = | -22.52528085 | ||
| 8 | 26831 | 2490 | - | 2586 | = | -96 | * | (74 | / | 356) | = | -19.95505613 | ||
| 11 | 26832 | 2552 | - | 2628 | = | -76 | * | (110 | / | 356) | = | -23.48314606 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rancho Dominguez Preparatory | -75 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -85 | -81 | -96 | -88 | -75 | -425.0 | -85.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -64.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -106.0
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 | 68% | 79% | 85% | 83% | 79% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Los Angeles 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.
Rancho Dominguez Preparatory math proficiency
Zero+ meets standard.
57% less $meal
64% less $meal
67% less $meal
71% less $meal
65% 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.