Rio Vista Elementary (Data source)
Source data for Rio Vista 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 | 1111764 | 2387 | - | 2436 | = | -49 | * | (86 | / | 362) | = | -11.64088394 | ||
| 4 | 1111765 | 2438 | - | 2485 | = | -47 | * | (99 | / | 362) | = | -12.85359111 | ||
| 5 | 1111768 | 2500 | - | 2528 | = | -28 | * | (85 | / | 362) | = | -6.57458561 | ||
| 6 | 1111769 | 2523 | - | 2552 | = | -29 | * | (92 | / | 362) | = | -7.37016573 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rio Vista Elementary | -38 | ||||||||||||
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 | 34742 | 2415 | - | 2436 | = | -21 | * | (91 | / | 364) | = | -5.25 | ||
| 4 | 34744 | 2455 | - | 2485 | = | -30 | * | (91 | / | 364) | = | -7.5 | ||
| 5 | 34745 | 2472 | - | 2528 | = | -56 | * | (100 | / | 364) | = | -15.38461534 | ||
| 6 | 34748 | 2558 | - | 2552 | = | 6 | * | (82 | / | 364) | = | 1.35164835 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rio Vista Elementary | -27 | ||||||||||||
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 | 35387 | 2414 | - | 2436 | = | -22 | * | (100 | / | 386) | = | -5.69948185 | ||
| 4 | 35389 | 2474 | - | 2485 | = | -11 | * | (84 | / | 386) | = | -2.39378238 | ||
| 5 | 35392 | 2487 | - | 2528 | = | -41 | * | (96 | / | 386) | = | -10.19689118 | ||
| 6 | 35393 | 2515 | - | 2552 | = | -37 | * | (106 | / | 386) | = | -10.16062173 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rio Vista Elementary | -28 | ||||||||||||
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 | 35397 | 2418 | - | 2436 | = | -18 | * | (71 | / | 347) | = | -3.68299712 | ||
| 4 | 35399 | 2462 | - | 2485 | = | -23 | * | (93 | / | 347) | = | -6.16426512 | ||
| 5 | 35401 | 2492 | - | 2528 | = | -36 | * | (88 | / | 347) | = | -9.12968298 | ||
| 6 | 35403 | 2536 | - | 2552 | = | -16 | * | (95 | / | 347) | = | -4.38040346 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rio Vista Elementary | -23 | ||||||||||||
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 | 35565 | 2419 | - | 2436 | = | -17 | * | (80 | / | 341) | = | -3.98826979 | ||
| 4 | 35566 | 2464 | - | 2485 | = | -21 | * | (65 | / | 341) | = | -4.00293254 | ||
| 5 | 35567 | 2461 | - | 2528 | = | -67 | * | (104 | / | 341) | = | -20.43401758 | ||
| 6 | 35568 | 2554 | - | 2552 | = | 2 | * | (92 | / | 341) | = | 0.53958944 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rio Vista Elementary | -28 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -38 | -27 | -28 | -23 | -28 | -144.0 | -28.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -13.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -43.8
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 | 62% | 61% | 62% | 66% | 64% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Saugus Union 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.
Rio Vista Elementary math proficiency
Zero+ meets standard.
51% less $meal
51% less $meal
52% less $meal
56% less $meal
56% 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.