Arlanza Elementary (Data source)
Source data for Arlanza 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 | 1642106 | 2377 | - | 2436 | = | -59 | * | (111 | / | 295) | = | -22.19999997 | ||
| 4 | 1642107 | 2402 | - | 2485 | = | -83 | * | (81 | / | 295) | = | -22.78983049 | ||
| 5 | 1642110 | 2424 | - | 2528 | = | -104 | * | (103 | / | 295) | = | -36.31186437 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Arlanza Elementary | -81 | ||||||||||||
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 | 51334 | 2391 | - | 2436 | = | -45 | * | (72 | / | 251) | = | -12.90836651 | ||
| 4 | 51336 | 2411 | - | 2485 | = | -74 | * | (106 | / | 251) | = | -31.25099594 | ||
| 5 | 51338 | 2412 | - | 2528 | = | -116 | * | (73 | / | 251) | = | -33.73705175 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Arlanza Elementary | -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 |
||
| 3 | 52817 | 2378 | - | 2436 | = | -58 | * | (95 | / | 274) | = | -20.10948902 | ||
| 4 | 52819 | 2430 | - | 2485 | = | -55 | * | (73 | / | 274) | = | -14.65328464 | ||
| 5 | 52821 | 2444 | - | 2528 | = | -84 | * | (106 | / | 274) | = | -32.49635029 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Arlanza Elementary | -67 | ||||||||||||
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 | 52908 | 2376 | - | 2436 | = | -60 | * | (76 | / | 248) | = | -18.38709672 | ||
| 4 | 52911 | 2424 | - | 2485 | = | -61 | * | (93 | / | 248) | = | -22.875 | ||
| 5 | 52912 | 2463 | - | 2528 | = | -65 | * | (79 | / | 248) | = | -20.70564516 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Arlanza Elementary | -62 | ||||||||||||
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 | 53139 | 2386 | - | 2436 | = | -50 | * | (87 | / | 263) | = | -16.53992395 | ||
| 4 | 53140 | 2433 | - | 2485 | = | -52 | * | (78 | / | 263) | = | -15.42205319 | ||
| 5 | 53141 | 2444 | - | 2528 | = | -84 | * | (98 | / | 263) | = | -31.30038022 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Arlanza Elementary | -63 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -81 | -78 | -67 | -62 | -63 | -351.0 | -70.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -46.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -94.2
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 | 99% | 97% | 96% | 95% | 94% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Alvord Unified school district | County of Riverside
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.
Arlanza Elementary math proficiency
Zero+ meets standard.
93% less $meal
87% less $meal
83% less $meal
87% less $meal
85% 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.