O. B. Whaley Elementary (Data source)
Source data for O. B. Whaley 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 | 2648320 | 2395 | - | 2436 | = | -41 | * | (87 | / | 344) | = | -10.36918602 | ||
| 4 | 2648323 | 2436 | - | 2485 | = | -49 | * | (89 | / | 344) | = | -12.67732557 | ||
| 5 | 2648324 | 2430 | - | 2528 | = | -98 | * | (69 | / | 344) | = | -19.65697671 | ||
| 6 | 2648327 | 2497 | - | 2552 | = | -55 | * | (99 | / | 344) | = | -15.82848834 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for O. B. Whaley Elementary | -59 | ||||||||||||
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 | 80739 | 2415 | - | 2436 | = | -21 | * | (76 | / | 312) | = | -5.1153846 | ||
| 4 | 80742 | 2451 | - | 2485 | = | -34 | * | (79 | / | 312) | = | -8.60897435 | ||
| 5 | 80743 | 2467 | - | 2528 | = | -61 | * | (88 | / | 312) | = | -17.2051282 | ||
| 6 | 80745 | 2486 | - | 2552 | = | -66 | * | (69 | / | 312) | = | -14.59615384 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for O. B. Whaley Elementary | -46 | ||||||||||||
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 | 82968 | 2401 | - | 2436 | = | -35 | * | (65 | / | 285) | = | -7.98245613 | ||
| 4 | 82970 | 2463 | - | 2485 | = | -22 | * | (75 | / | 285) | = | -5.78947367 | ||
| 5 | 82973 | 2453 | - | 2528 | = | -75 | * | (68 | / | 285) | = | -17.89473683 | ||
| 6 | 82975 | 2508 | - | 2552 | = | -44 | * | (77 | / | 285) | = | -11.88771927 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for O. B. Whaley Elementary | -44 | ||||||||||||
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 | 83185 | 2410 | - | 2436 | = | -26 | * | (61 | / | 252) | = | -6.29365079 | ||
| 4 | 83187 | 2452 | - | 2485 | = | -33 | * | (52 | / | 252) | = | -6.8095238 | ||
| 5 | 83189 | 2491 | - | 2528 | = | -37 | * | (75 | / | 252) | = | -11.01190474 | ||
| 6 | 83191 | 2495 | - | 2552 | = | -57 | * | (64 | / | 252) | = | -14.47619042 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for O. B. Whaley Elementary | -39 | ||||||||||||
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 | 83799 | 2415 | - | 2436 | = | -21 | * | (55 | / | 233) | = | -4.95708154 | ||
| 4 | 83800 | 2424 | - | 2485 | = | -61 | * | (59 | / | 233) | = | -15.44635192 | ||
| 5 | 83801 | 2464 | - | 2528 | = | -64 | * | (50 | / | 233) | = | -13.73390554 | ||
| 6 | 83802 | 2506 | - | 2552 | = | -46 | * | (69 | / | 233) | = | -13.62231759 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for O. B. Whaley Elementary | -48 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -59 | -46 | -44 | -39 | -48 | -236.0 | -47.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -26.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -68.2
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 | 76% | 73% | 68% | 70% | 61% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Evergreen Elementary school district | County of Santa Clara
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.
O. B. Whaley Elementary math proficiency
Zero+ meets standard.
65% less $meal
64% less $meal
59% less $meal
59% less $meal
53% 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.