R. L. Stevenson Elementary (Data source)
Source data for R. L. Stevenson 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 | 651257 | 2440 | - | 2436 | = | 4 | * | (80 | / | 257) | = | 1.24513618 | ||
| 4 | 651258 | 2498 | - | 2485 | = | 13 | * | (95 | / | 257) | = | 4.80544747 | ||
| 5 | 651261 | 2503 | - | 2528 | = | -25 | * | (82 | / | 257) | = | -7.97665368 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for R. L. Stevenson Elementary | -2 | ||||||||||||
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 | 20719 | 2451 | - | 2436 | = | 15 | * | (85 | / | 266) | = | 4.79323308 | ||
| 4 | 20721 | 2506 | - | 2485 | = | 21 | * | (86 | / | 266) | = | 6.78947367 | ||
| 5 | 20724 | 2530 | - | 2528 | = | 2 | * | (95 | / | 266) | = | 0.71428571 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for R. L. Stevenson Elementary | 12 | ||||||||||||
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 | 21082 | 2457 | - | 2436 | = | 21 | * | (114 | / | 295) | = | 8.11525422 | ||
| 4 | 21083 | 2493 | - | 2485 | = | 8 | * | (93 | / | 295) | = | 2.5220339 | ||
| 5 | 21086 | 2546 | - | 2528 | = | 18 | * | (88 | / | 295) | = | 5.36949151 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for R. L. Stevenson Elementary | 16 | ||||||||||||
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 | 21058 | 2478 | - | 2436 | = | 42 | * | (90 | / | 300) | = | 12.6 | ||
| 4 | 21061 | 2495 | - | 2485 | = | 10 | * | (119 | / | 300) | = | 3.96666666 | ||
| 5 | 21062 | 2519 | - | 2528 | = | -9 | * | (91 | / | 300) | = | -2.73 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for R. L. Stevenson Elementary | 14 | ||||||||||||
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 | 21232 | 2476 | - | 2436 | = | 40 | * | (92 | / | 298) | = | 12.34899328 | ||
| 4 | 21233 | 2502 | - | 2485 | = | 17 | * | (94 | / | 298) | = | 5.3624161 | ||
| 5 | 21234 | 2529 | - | 2528 | = | 1 | * | (112 | / | 298) | = | 0.37583893 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for R. L. Stevenson Elementary | 18 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -2 | 12 | 16 | 14 | 18 | 58.0 | 11.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 32.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -9.4
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 | 19% | 16% | 17% | 22% | 21% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Burbank 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.
R. L. Stevenson Elementary math proficiency
Zero+ meets standard.
14% less $meal
11% less $meal
14% less $meal
19% less $meal
18% 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.