Walter F. Dexter Middle (Data source)
Source data for Walter F. Dexter Middle
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 |
||
| 6 | 1151027 | 2480 | - | 2552 | = | -72 | * | (365 | / | 1072) | = | -24.51492533 | ||
| 7 | 1151030 | 2495 | - | 2567 | = | -72 | * | (323 | / | 1072) | = | -21.69402984 | ||
| 8 | 1151031 | 2503 | - | 2586 | = | -83 | * | (384 | / | 1072) | = | -29.73134327 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Walter F. Dexter Middle | -76 | ||||||||||||
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 |
||
| 6 | 35824 | 2468 | - | 2552 | = | -84 | * | (338 | / | 1029) | = | -27.59183666 | ||
| 7 | 35826 | 2489 | - | 2567 | = | -78 | * | (356 | / | 1029) | = | -26.98542272 | ||
| 8 | 35827 | 2515 | - | 2586 | = | -71 | * | (335 | / | 1029) | = | -23.11467437 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Walter F. Dexter Middle | -78 | ||||||||||||
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 |
||
| 6 | 36540 | 2483 | - | 2552 | = | -69 | * | (329 | / | 1014) | = | -22.38757392 | ||
| 7 | 36541 | 2497 | - | 2567 | = | -70 | * | (339 | / | 1014) | = | -23.40236682 | ||
| 8 | 36543 | 2514 | - | 2586 | = | -72 | * | (346 | / | 1014) | = | -24.56804729 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Walter F. Dexter Middle | -70 | ||||||||||||
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 |
||
| 6 | 36526 | 2478 | - | 2552 | = | -74 | * | (335 | / | 1018) | = | -24.35166988 | ||
| 7 | 36528 | 2501 | - | 2567 | = | -66 | * | (328 | / | 1018) | = | -21.26522587 | ||
| 8 | 36530 | 2518 | - | 2586 | = | -68 | * | (355 | / | 1018) | = | -23.71316305 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Walter F. Dexter Middle | -69 | ||||||||||||
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 |
||
| 6 | 36688 | 2501 | - | 2552 | = | -51 | * | (281 | / | 939) | = | -15.26198083 | ||
| 7 | 36689 | 2493 | - | 2567 | = | -74 | * | (334 | / | 939) | = | -26.3216187 | ||
| 8 | 36690 | 2526 | - | 2586 | = | -60 | * | (324 | / | 939) | = | -20.70287538 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Walter F. Dexter Middle | -62 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -76 | -78 | -70 | -69 | -62 | -355.0 | -71.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -53.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -89.0
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 | 79% | 79% | 78% | 74% | 78% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Whittier City Elementary 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.
Walter F. Dexter Middle math proficiency
Zero+ meets standard.
67% less $meal
70% less $meal
65% less $meal
63% less $meal
67% 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.
Intermediate/Middle Schools (Public) schools in Whittier City Elementary (2)
| Katherine Edwards Middle | Walter F. Dexter Middle |