Westfield Elementary (Data source)
Source data for Westfield 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 | 3080937 | 2361 | - | 2436 | = | -75 | * | (100 | / | 373) | = | -20.10723855 | ||
| 4 | 3080938 | 2422 | - | 2485 | = | -63 | * | (92 | / | 373) | = | -15.53887396 | ||
| 5 | 3080941 | 2464 | - | 2528 | = | -64 | * | (88 | / | 373) | = | -15.09919565 | ||
| 6 | 3080942 | 2489 | - | 2552 | = | -63 | * | (93 | / | 373) | = | -15.70777475 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Westfield Elementary | -66 | ||||||||||||
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 | 94864 | 2400 | - | 2436 | = | -36 | * | (95 | / | 378) | = | -9.04761904 | ||
| 4 | 94866 | 2433 | - | 2485 | = | -52 | * | (96 | / | 378) | = | -13.20634916 | ||
| 5 | 94869 | 2478 | - | 2528 | = | -50 | * | (90 | / | 378) | = | -11.9047619 | ||
| 6 | 94870 | 2481 | - | 2552 | = | -71 | * | (97 | / | 378) | = | -18.21957668 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Westfield Elementary | -52 | ||||||||||||
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 | 97642 | 2411 | - | 2436 | = | -25 | * | (95 | / | 379) | = | -6.26649075 | ||
| 4 | 97644 | 2446 | - | 2485 | = | -39 | * | (96 | / | 379) | = | -9.87862797 | ||
| 5 | 97645 | 2451 | - | 2528 | = | -77 | * | (93 | / | 379) | = | -18.89445905 | ||
| 6 | 97648 | 2481 | - | 2552 | = | -71 | * | (95 | / | 379) | = | -17.79683373 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Westfield Elementary | -53 | ||||||||||||
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 | 97821 | 2430 | - | 2436 | = | -6 | * | (91 | / | 380) | = | -1.4368421 | ||
| 4 | 97823 | 2473 | - | 2485 | = | -12 | * | (91 | / | 380) | = | -2.87368421 | ||
| 5 | 97824 | 2493 | - | 2528 | = | -35 | * | (99 | / | 380) | = | -9.11842103 | ||
| 6 | 97827 | 2499 | - | 2552 | = | -53 | * | (99 | / | 380) | = | -13.8078947 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Westfield Elementary | -27 | ||||||||||||
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 | 98480 | 2438 | - | 2436 | = | 2 | * | (71 | / | 380) | = | 0.37368421 | ||
| 4 | 98481 | 2470 | - | 2485 | = | -15 | * | (98 | / | 380) | = | -3.86842104 | ||
| 5 | 98482 | 2495 | - | 2528 | = | -33 | * | (93 | / | 380) | = | -8.07631579 | ||
| 6 | 98483 | 2513 | - | 2552 | = | -39 | * | (118 | / | 380) | = | -12.11052629 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Westfield Elementary | -24 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -66 | -52 | -53 | -27 | -24 | -222.0 | -44.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 9.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -98.4
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 | 80% | 77% | 79% | 74% | 75% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Porterville Unified school district | County of Tulare
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.
Westfield Elementary math proficiency
Zero+ meets standard.
77% less $meal
71% less $meal
79% less $meal
73% less $meal
75% 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.