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 | 692621 | 2449 | - | 2436 | = | 13 | * | (57 | / | 211) | = | 3.51184834 | ||
| 4 | 692624 | 2474 | - | 2485 | = | -11 | * | (50 | / | 211) | = | -2.60663506 | ||
| 5 | 692625 | 2463 | - | 2528 | = | -65 | * | (53 | / | 211) | = | -16.32701421 | ||
| 6 | 692628 | 2582 | - | 2552 | = | 30 | * | (51 | / | 211) | = | 7.25118483 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rio Vista Elementary | -8 | ||||||||||||
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 | 21905 | 2421 | - | 2436 | = | -15 | * | (57 | / | 213) | = | -4.0140845 | ||
| 4 | 21907 | 2498 | - | 2485 | = | 13 | * | (57 | / | 213) | = | 3.47887323 | ||
| 5 | 21909 | 2517 | - | 2528 | = | -11 | * | (45 | / | 213) | = | -2.32394366 | ||
| 6 | 21911 | 2532 | - | 2552 | = | -20 | * | (54 | / | 213) | = | -5.07042252 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rio Vista Elementary | -8 | ||||||||||||
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 | 22321 | 2425 | - | 2436 | = | -11 | * | (51 | / | 206) | = | -2.72330097 | ||
| 4 | 22323 | 2474 | - | 2485 | = | -11 | * | (57 | / | 206) | = | -3.04368932 | ||
| 5 | 22326 | 2540 | - | 2528 | = | 12 | * | (55 | / | 206) | = | 3.20388349 | ||
| 6 | 22327 | 2539 | - | 2552 | = | -13 | * | (43 | / | 206) | = | -2.71359223 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rio Vista Elementary | -5 | ||||||||||||
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 | 22308 | 2429 | - | 2436 | = | -7 | * | (52 | / | 216) | = | -1.68518518 | ||
| 4 | 22311 | 2460 | - | 2485 | = | -25 | * | (52 | / | 216) | = | -6.0185185 | ||
| 5 | 22312 | 2515 | - | 2528 | = | -13 | * | (58 | / | 216) | = | -3.49074073 | ||
| 6 | 22315 | 2571 | - | 2552 | = | 19 | * | (54 | / | 216) | = | 4.75 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rio Vista Elementary | -6 | ||||||||||||
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 | 22487 | 2450 | - | 2436 | = | 14 | * | (49 | / | 206) | = | 3.33009708 | ||
| 4 | 22488 | 2501 | - | 2485 | = | 16 | * | (51 | / | 206) | = | 3.96116504 | ||
| 5 | 22489 | 2503 | - | 2528 | = | -25 | * | (51 | / | 206) | = | -6.18932038 | ||
| 6 | 22490 | 2547 | - | 2552 | = | -5 | * | (55 | / | 206) | = | -1.33495146 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rio Vista Elementary | 0 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -8 | -8 | -5 | -6 | 0 | -27.0 | -5.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -3.75
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -9.75
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 | 87% | 87% | 90% | 90% | 95% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
El Monte City 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.
75% less $meal
76% less $meal
76% less $meal
80% 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.