Longley Way Elementary (Data source)
Source data for Longley Way 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 | 618578 | 2495 | - | 2436 | = | 59 | * | (76 | / | 236) | = | 18.99999998 | ||
| 4 | 618581 | 2516 | - | 2485 | = | 31 | * | (83 | / | 236) | = | 10.90254237 | ||
| 5 | 618582 | 2558 | - | 2528 | = | 30 | * | (77 | / | 236) | = | 9.78813558 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Longley Way Elementary | 40 | ||||||||||||
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 | 19774 | 2489 | - | 2436 | = | 53 | * | (103 | / | 266) | = | 20.52255639 | ||
| 4 | 19775 | 2533 | - | 2485 | = | 48 | * | (78 | / | 266) | = | 14.07518794 | ||
| 5 | 19778 | 2557 | - | 2528 | = | 29 | * | (85 | / | 266) | = | 9.26691729 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Longley Way Elementary | 44 | ||||||||||||
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 | 20076 | 2534 | - | 2436 | = | 98 | * | (79 | / | 268) | = | 28.88805966 | ||
| 4 | 20078 | 2542 | - | 2485 | = | 57 | * | (97 | / | 268) | = | 20.63059699 | ||
| 5 | 20079 | 2568 | - | 2528 | = | 40 | * | (92 | / | 268) | = | 13.73134328 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Longley Way Elementary | 63 | ||||||||||||
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 | 20074 | 2488 | - | 2436 | = | 52 | * | (78 | / | 262) | = | 15.480916 | ||
| 4 | 20076 | 2571 | - | 2485 | = | 86 | * | (88 | / | 262) | = | 28.88549613 | ||
| 5 | 20078 | 2580 | - | 2528 | = | 52 | * | (96 | / | 262) | = | 19.05343508 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Longley Way Elementary | 63 | ||||||||||||
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 | 20256 | 2492 | - | 2436 | = | 56 | * | (78 | / | 261) | = | 16.73563214 | ||
| 4 | 20257 | 2524 | - | 2485 | = | 39 | * | (90 | / | 261) | = | 13.44827585 | ||
| 5 | 20258 | 2595 | - | 2528 | = | 67 | * | (93 | / | 261) | = | 23.87356321 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Longley Way Elementary | 54 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 40 | 44 | 63 | 63 | 54 | 264.0 | 52.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 82.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 22.8
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 | 25% | 28% | 24% | 29% | 29% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Arcadia 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.
Longley Way Elementary math proficiency
Zero+ meets standard.
17% less $meal
20% less $meal
16% less $meal
24% less $meal
25% 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.
Elementary School (Public) schools in Arcadia Unified (6)
| Baldwin Stocker Elementary | Camino Grove Elementary | Highland Oaks Elementary |
| Holly Avenue Elementary | Hugo Reid Elementary | Longley Way Elementary |