Lazear Charter Academy (Data source)
Source data for Lazear Charter 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 | 4152 | 2379 | - | 2436 | = | -57 | * | (46 | / | 282) | = | -9.29787232 | ||
| 4 | 4153 | 2432 | - | 2485 | = | -53 | * | (51 | / | 282) | = | -9.58510634 | ||
| 5 | 4156 | 2456 | - | 2528 | = | -72 | * | (48 | / | 282) | = | -12.25531908 | ||
| 6 | 4158 | 2467 | - | 2552 | = | -85 | * | (44 | / | 282) | = | -13.26241128 | ||
| 7 | 4160 | 2476 | - | 2567 | = | -91 | * | (45 | / | 282) | = | -14.52127659 | ||
| 8 | 4161 | 2514 | - | 2586 | = | -72 | * | (48 | / | 282) | = | -12.25531908 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lazear Charter Academy | -71 | ||||||||||||
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 | 110 | 2374 | - | 2436 | = | -62 | * | (49 | / | 296) | = | -10.26351348 | ||
| 4 | 112 | 2422 | - | 2485 | = | -63 | * | (52 | / | 296) | = | -11.06756753 | ||
| 5 | 114 | 2440 | - | 2528 | = | -88 | * | (54 | / | 296) | = | -16.05405402 | ||
| 6 | 116 | 2426 | - | 2552 | = | -126 | * | (50 | / | 296) | = | -21.28378367 | ||
| 7 | 117 | 2467 | - | 2567 | = | -100 | * | (40 | / | 296) | = | -13.5135135 | ||
| 8 | 119 | 2460 | - | 2586 | = | -126 | * | (51 | / | 296) | = | -21.70945942 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lazear Charter Academy | -94 | ||||||||||||
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 | 115 | 2407 | - | 2436 | = | -29 | * | (47 | / | 317) | = | -4.29968454 | ||
| 4 | 117 | 2417 | - | 2485 | = | -68 | * | (54 | / | 317) | = | -11.5835962 | ||
| 5 | 120 | 2478 | - | 2528 | = | -50 | * | (54 | / | 317) | = | -8.51735015 | ||
| 6 | 122 | 2416 | - | 2552 | = | -136 | * | (56 | / | 317) | = | -24.02523654 | ||
| 7 | 124 | 2423 | - | 2567 | = | -144 | * | (55 | / | 317) | = | -24.98422709 | ||
| 8 | 126 | 2488 | - | 2586 | = | -98 | * | (51 | / | 317) | = | -15.76656144 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lazear Charter Academy | -89 | ||||||||||||
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 | 135 | 2452 | - | 2436 | = | 16 | * | (43 | / | 301) | = | 2.28571427 | ||
| 4 | 138 | 2426 | - | 2485 | = | -59 | * | (53 | / | 301) | = | -10.38870431 | ||
| 5 | 139 | 2486 | - | 2528 | = | -42 | * | (54 | / | 301) | = | -7.53488371 | ||
| 6 | 142 | 2518 | - | 2552 | = | -34 | * | (48 | / | 301) | = | -5.42192689 | ||
| 7 | 143 | 2508 | - | 2567 | = | -59 | * | (52 | / | 301) | = | -10.19269103 | ||
| 8 | 146 | 2509 | - | 2586 | = | -77 | * | (51 | / | 301) | = | -13.04651156 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lazear Charter Academy | -44 | ||||||||||||
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 | 150 | 2422 | - | 2436 | = | -14 | * | (49 | / | 299) | = | -2.29431437 | ||
| 4 | 151 | 2468 | - | 2485 | = | -17 | * | (45 | / | 299) | = | -2.55852842 | ||
| 5 | 152 | 2478 | - | 2528 | = | -50 | * | (52 | / | 299) | = | -8.69565215 | ||
| 6 | 153 | 2523 | - | 2552 | = | -29 | * | (56 | / | 299) | = | -5.4314381 | ||
| 7 | 154 | 2541 | - | 2567 | = | -26 | * | (51 | / | 299) | = | -4.43478259 | ||
| 8 | 155 | 2546 | - | 2586 | = | -40 | * | (46 | / | 299) | = | -6.15384612 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lazear Charter Academy | -30 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -71 | -94 | -89 | -44 | -30 | -328.0 | -65.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average:
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average:
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 | 92% | 92% | 84% | 91% | 89% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Alameda County Office of Education school district | County of Alameda
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.