Cubberley K-8 (Data source)
Source data for Cubberley K-8
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 | 766574 | 2462 | - | 2436 | = | 26 | * | (91 | / | 725) | = | 3.26344827 | ||
| 4 | 766575 | 2455 | - | 2485 | = | -30 | * | (100 | / | 725) | = | -4.13793102 | ||
| 5 | 766578 | 2510 | - | 2528 | = | -18 | * | (112 | / | 725) | = | -2.78068964 | ||
| 6 | 766579 | 2530 | - | 2552 | = | -22 | * | (143 | / | 725) | = | -4.33931034 | ||
| 7 | 766582 | 2539 | - | 2567 | = | -28 | * | (140 | / | 725) | = | -5.40689654 | ||
| 8 | 766583 | 2537 | - | 2586 | = | -49 | * | (139 | / | 725) | = | -9.39448271 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cubberley K-8 | -23 | ||||||||||||
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 | 24070 | 2451 | - | 2436 | = | 15 | * | (99 | / | 722) | = | 2.0567867 | ||
| 4 | 24073 | 2473 | - | 2485 | = | -12 | * | (93 | / | 722) | = | -1.54570637 | ||
| 5 | 24075 | 2491 | - | 2528 | = | -37 | * | (109 | / | 722) | = | -5.58587257 | ||
| 6 | 24077 | 2521 | - | 2552 | = | -31 | * | (143 | / | 722) | = | -6.13988917 | ||
| 7 | 24078 | 2566 | - | 2567 | = | -1 | * | (141 | / | 722) | = | -0.19529086 | ||
| 8 | 24081 | 2546 | - | 2586 | = | -40 | * | (137 | / | 722) | = | -7.59002768 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cubberley K-8 | -19 | ||||||||||||
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 | 24572 | 2475 | - | 2436 | = | 39 | * | (93 | / | 730) | = | 4.96849314 | ||
| 4 | 24574 | 2461 | - | 2485 | = | -24 | * | (114 | / | 730) | = | -3.74794519 | ||
| 5 | 24576 | 2507 | - | 2528 | = | -21 | * | (109 | / | 730) | = | -3.13561643 | ||
| 6 | 24577 | 2527 | - | 2552 | = | -25 | * | (134 | / | 730) | = | -4.58904108 | ||
| 7 | 24579 | 2546 | - | 2567 | = | -21 | * | (142 | / | 730) | = | -4.08493149 | ||
| 8 | 24581 | 2550 | - | 2586 | = | -36 | * | (138 | / | 730) | = | -6.80547942 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cubberley K-8 | -17 | ||||||||||||
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 | 24595 | 2507 | - | 2436 | = | 71 | * | (92 | / | 703) | = | 9.29160734 | ||
| 4 | 24597 | 2493 | - | 2485 | = | 8 | * | (99 | / | 703) | = | 1.12660028 | ||
| 5 | 24599 | 2505 | - | 2528 | = | -23 | * | (109 | / | 703) | = | -3.56614508 | ||
| 6 | 24601 | 2562 | - | 2552 | = | 10 | * | (130 | / | 703) | = | 1.84921763 | ||
| 7 | 24603 | 2537 | - | 2567 | = | -30 | * | (132 | / | 703) | = | -5.63300142 | ||
| 8 | 24605 | 2554 | - | 2586 | = | -32 | * | (141 | / | 703) | = | -6.41820768 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cubberley K-8 | -3 | ||||||||||||
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 | 24767 | 2500 | - | 2436 | = | 64 | * | (93 | / | 679) | = | 8.76583206 | ||
| 4 | 24768 | 2528 | - | 2485 | = | 43 | * | (102 | / | 679) | = | 6.45949926 | ||
| 5 | 24769 | 2528 | - | 2528 | = | 0 | * | (109 | / | 679) | = | 0.0 | ||
| 6 | 24770 | 2559 | - | 2552 | = | 7 | * | (124 | / | 679) | = | 1.27835051 | ||
| 7 | 24771 | 2570 | - | 2567 | = | 3 | * | (126 | / | 679) | = | 0.55670103 | ||
| 8 | 24772 | 2548 | - | 2586 | = | -38 | * | (125 | / | 679) | = | -6.99558173 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cubberley K-8 | 10 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -23 | -19 | -17 | -3 | 10 | -52.0 | -10.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 28.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -49.4
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 | 27% | 29% | 30% | 28% | 28% |
| 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.
Cubberley K-8 math proficiency
Zero+ meets standard.
20% less $meal
23% less $meal
23% less $meal
21% less $meal
23% 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.