La Primaria Elementary (Data source)
Source data for La Primaria 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 | 1041408 | 2425 | - | 2436 | = | -11 | * | (52 | / | 150) | = | -3.81333333 | ||
| 4 | 1041411 | 2455 | - | 2485 | = | -30 | * | (52 | / | 150) | = | -10.39999998 | ||
| 5 | 1041412 | 2531 | - | 2528 | = | 3 | * | (46 | / | 150) | = | 0.92 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for La Primaria Elementary | -13 | ||||||||||||
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 | 32700 | 2402 | - | 2436 | = | -34 | * | (54 | / | 150) | = | -12.24 | ||
| 4 | 32702 | 2486 | - | 2485 | = | 1 | * | (50 | / | 150) | = | 0.33333333 | ||
| 5 | 32705 | 2517 | - | 2528 | = | -11 | * | (46 | / | 150) | = | -3.37333333 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for La Primaria Elementary | -15 | ||||||||||||
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 | 33278 | 2388 | - | 2436 | = | -48 | * | (48 | / | 142) | = | -16.22535211 | ||
| 4 | 33281 | 2485 | - | 2485 | = | 0 | * | (42 | / | 142) | = | 0.0 | ||
| 5 | 33282 | 2522 | - | 2528 | = | -6 | * | (52 | / | 142) | = | -2.1971831 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for La Primaria Elementary | -18 | ||||||||||||
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 | 33299 | 2402 | - | 2436 | = | -34 | * | (42 | / | 126) | = | -11.33333332 | ||
| 4 | 33301 | 2455 | - | 2485 | = | -30 | * | (42 | / | 126) | = | -9.99999999 | ||
| 5 | 33303 | 2536 | - | 2528 | = | 8 | * | (42 | / | 126) | = | 2.66666666 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for La Primaria Elementary | -19 | ||||||||||||
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 | 33470 | 2400 | - | 2436 | = | -36 | * | (47 | / | 127) | = | -13.32283464 | ||
| 4 | 33471 | 2460 | - | 2485 | = | -25 | * | (41 | / | 127) | = | -8.07086613 | ||
| 5 | 33472 | 2512 | - | 2528 | = | -16 | * | (39 | / | 127) | = | -4.91338582 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for La Primaria Elementary | -26 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -13 | -15 | -18 | -19 | -26 | -91.0 | -18.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -6.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -30.2
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 | 88% | 83% | 88% | 89% | 84% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Mountain View 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.
La Primaria Elementary math proficiency
Zero+ meets standard.
75% less $meal
70% less $meal
75% less $meal
81% less $meal
76% 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.