Los Ranchos Elementary (Data source)
Source data for Los Ranchos 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 | 2492473 | 2477 | - | 2436 | = | 41 | * | (65 | / | 253) | = | 10.53359684 | ||
| 4 | 2492476 | 2497 | - | 2485 | = | 12 | * | (69 | / | 253) | = | 3.27272726 | ||
| 5 | 2492477 | 2519 | - | 2528 | = | -9 | * | (66 | / | 253) | = | -2.34782609 | ||
| 6 | 2492480 | 2540 | - | 2552 | = | -12 | * | (53 | / | 253) | = | -2.51383399 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Los Ranchos Elementary | 9 | ||||||||||||
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 | 75994 | 2493 | - | 2436 | = | 57 | * | (70 | / | 260) | = | 15.34615383 | ||
| 4 | 75996 | 2518 | - | 2485 | = | 33 | * | (59 | / | 260) | = | 7.48846151 | ||
| 5 | 75998 | 2541 | - | 2528 | = | 13 | * | (65 | / | 260) | = | 3.25 | ||
| 6 | 76000 | 2569 | - | 2552 | = | 17 | * | (66 | / | 260) | = | 4.3153846 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Los Ranchos Elementary | 30 | ||||||||||||
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 | 78030 | 2485 | - | 2436 | = | 49 | * | (63 | / | 261) | = | 11.82758619 | ||
| 4 | 78032 | 2527 | - | 2485 | = | 42 | * | (68 | / | 261) | = | 10.94252872 | ||
| 5 | 78034 | 2562 | - | 2528 | = | 34 | * | (63 | / | 261) | = | 8.20689654 | ||
| 6 | 78037 | 2579 | - | 2552 | = | 27 | * | (67 | / | 261) | = | 6.93103446 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Los Ranchos Elementary | 38 | ||||||||||||
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 | 78186 | 2494 | - | 2436 | = | 58 | * | (55 | / | 249) | = | 12.81124497 | ||
| 4 | 78187 | 2535 | - | 2485 | = | 50 | * | (61 | / | 249) | = | 12.24899595 | ||
| 5 | 78190 | 2565 | - | 2528 | = | 37 | * | (71 | / | 249) | = | 10.55020079 | ||
| 6 | 78191 | 2590 | - | 2552 | = | 38 | * | (62 | / | 249) | = | 9.46184735 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Los Ranchos Elementary | 45 | ||||||||||||
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 | 78716 | 2498 | - | 2436 | = | 62 | * | (64 | / | 250) | = | 15.872 | ||
| 4 | 78717 | 2549 | - | 2485 | = | 64 | * | (52 | / | 250) | = | 13.312 | ||
| 5 | 78718 | 2562 | - | 2528 | = | 34 | * | (63 | / | 250) | = | 8.568 | ||
| 6 | 78719 | 2606 | - | 2552 | = | 54 | * | (71 | / | 250) | = | 15.336 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Los Ranchos Elementary | 53 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 9 | 30 | 38 | 45 | 53 | 175.0 | 35.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 83.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -13.0
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 | 13% | 16% | 16% | 19% | 19% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Luis Coastal Unified school district | County of San Luis Obispo
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.
Los Ranchos Elementary math proficiency
Zero+ meets standard.
12% less $meal
14% less $meal
14% less $meal
16% 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.