Robinson Academy (Data source)
Source data for Robinson Academy
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 | 784010 | 2412 | - | 2436 | = | -24 | * | (103 | / | 606) | = | -4.0792079 | ||
| 4 | 784013 | 2426 | - | 2485 | = | -59 | * | (102 | / | 606) | = | -9.93069303 | ||
| 5 | 784014 | 2452 | - | 2528 | = | -76 | * | (102 | / | 606) | = | -12.79207916 | ||
| 6 | 784017 | 2482 | - | 2552 | = | -70 | * | (104 | / | 606) | = | -12.01320127 | ||
| 7 | 784018 | 2496 | - | 2567 | = | -71 | * | (97 | / | 606) | = | -11.36468643 | ||
| 8 | 784021 | 2513 | - | 2586 | = | -73 | * | (98 | / | 606) | = | -11.80528048 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Robinson Academy | -62 | ||||||||||||
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 | 24529 | 2421 | - | 2436 | = | -15 | * | (107 | / | 620) | = | -2.58870968 | ||
| 4 | 24530 | 2452 | - | 2485 | = | -33 | * | (99 | / | 620) | = | -5.26935483 | ||
| 5 | 24533 | 2457 | - | 2528 | = | -71 | * | (98 | / | 620) | = | -11.22258064 | ||
| 6 | 24535 | 2470 | - | 2552 | = | -82 | * | (106 | / | 620) | = | -14.01935476 | ||
| 7 | 24537 | 2509 | - | 2567 | = | -58 | * | (105 | / | 620) | = | -9.8225806 | ||
| 8 | 24538 | 2516 | - | 2586 | = | -70 | * | (105 | / | 620) | = | -11.85483866 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Robinson Academy | -55 | ||||||||||||
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 | 25024 | 2425 | - | 2436 | = | -11 | * | (104 | / | 620) | = | -1.84516129 | ||
| 4 | 25025 | 2461 | - | 2485 | = | -24 | * | (104 | / | 620) | = | -4.02580644 | ||
| 5 | 25028 | 2502 | - | 2528 | = | -26 | * | (100 | / | 620) | = | -4.19354837 | ||
| 6 | 25029 | 2482 | - | 2552 | = | -70 | * | (104 | / | 620) | = | -11.74193545 | ||
| 7 | 25031 | 2500 | - | 2567 | = | -67 | * | (105 | / | 620) | = | -11.34677415 | ||
| 8 | 25033 | 2528 | - | 2586 | = | -58 | * | (103 | / | 620) | = | -9.63548386 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Robinson Academy | -43 | ||||||||||||
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 | 25047 | 2426 | - | 2436 | = | -10 | * | (89 | / | 607) | = | -1.46622734 | ||
| 4 | 25049 | 2481 | - | 2485 | = | -4 | * | (100 | / | 607) | = | -0.65897858 | ||
| 5 | 25051 | 2518 | - | 2528 | = | -10 | * | (106 | / | 607) | = | -1.74629324 | ||
| 6 | 25053 | 2509 | - | 2552 | = | -43 | * | (105 | / | 607) | = | -7.43822075 | ||
| 7 | 25055 | 2497 | - | 2567 | = | -70 | * | (104 | / | 607) | = | -11.99341017 | ||
| 8 | 25057 | 2547 | - | 2586 | = | -39 | * | (103 | / | 607) | = | -6.61779242 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Robinson Academy | -30 | ||||||||||||
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 | 25219 | 2443 | - | 2436 | = | 7 | * | (101 | / | 609) | = | 1.16091954 | ||
| 4 | 25220 | 2468 | - | 2485 | = | -17 | * | (92 | / | 609) | = | -2.56814449 | ||
| 5 | 25221 | 2543 | - | 2528 | = | 15 | * | (104 | / | 609) | = | 2.56157634 | ||
| 6 | 25222 | 2521 | - | 2552 | = | -31 | * | (104 | / | 609) | = | -5.29392444 | ||
| 7 | 25223 | 2516 | - | 2567 | = | -51 | * | (106 | / | 609) | = | -8.87684728 | ||
| 8 | 25224 | 2533 | - | 2586 | = | -53 | * | (102 | / | 609) | = | -8.87684725 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Robinson Academy | -22 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -62 | -55 | -43 | -30 | -22 | -212.0 | -42.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 5.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -90.4
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 | 94% | 94% | 95% | 93% | 95% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Long Beach 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.
Robinson Academy math proficiency
Zero+ meets standard.
85% less $meal
84% less $meal
86% less $meal
82% less $meal
88% 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.