Del Lago Elementary (Data source)
Source data for Del Lago 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 | 1561354 | 2416 | - | 2436 | = | -20 | * | (107 | / | 395) | = | -5.4177215 | ||
| 4 | 1561357 | 2451 | - | 2485 | = | -34 | * | (87 | / | 395) | = | -7.48860758 | ||
| 5 | 1561358 | 2470 | - | 2528 | = | -58 | * | (94 | / | 395) | = | -13.80253161 | ||
| 6 | 1561361 | 2505 | - | 2552 | = | -47 | * | (107 | / | 395) | = | -12.73164553 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Del Lago Elementary | -39 | ||||||||||||
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 | 48894 | 2421 | - | 2436 | = | -15 | * | (68 | / | 350) | = | -2.91428571 | ||
| 4 | 48896 | 2460 | - | 2485 | = | -25 | * | (97 | / | 350) | = | -6.92857143 | ||
| 5 | 48899 | 2488 | - | 2528 | = | -40 | * | (85 | / | 350) | = | -9.71428568 | ||
| 6 | 48900 | 2500 | - | 2552 | = | -52 | * | (100 | / | 350) | = | -14.85714282 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Del Lago Elementary | -34 | ||||||||||||
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 | 50231 | 2420 | - | 2436 | = | -16 | * | (86 | / | 309) | = | -4.45307443 | ||
| 4 | 50233 | 2437 | - | 2485 | = | -48 | * | (63 | / | 309) | = | -9.78640776 | ||
| 5 | 50235 | 2496 | - | 2528 | = | -32 | * | (89 | / | 309) | = | -9.21682845 | ||
| 6 | 50236 | 2532 | - | 2552 | = | -20 | * | (71 | / | 309) | = | -4.59546924 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Del Lago 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 | 50255 | 2411 | - | 2436 | = | -25 | * | (73 | / | 309) | = | -5.90614885 | ||
| 4 | 50256 | 2482 | - | 2485 | = | -3 | * | (88 | / | 309) | = | -0.85436893 | ||
| 5 | 50259 | 2483 | - | 2528 | = | -45 | * | (63 | / | 309) | = | -9.17475728 | ||
| 6 | 50260 | 2533 | - | 2552 | = | -19 | * | (85 | / | 309) | = | -5.22653721 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Del Lago Elementary | -21 | ||||||||||||
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 | 50448 | 2435 | - | 2436 | = | -1 | * | (57 | / | 275) | = | -0.20727273 | ||
| 4 | 50449 | 2476 | - | 2485 | = | -9 | * | (72 | / | 275) | = | -2.35636363 | ||
| 5 | 50450 | 2522 | - | 2528 | = | -6 | * | (83 | / | 275) | = | -1.81090909 | ||
| 6 | 50451 | 2513 | - | 2552 | = | -39 | * | (63 | / | 275) | = | -8.93454545 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Del Lago Elementary | -13 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -39 | -34 | -28 | -21 | -13 | -135.0 | -27.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 3.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -57.0
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 | 27% | 30% | 26% | 33% | 35% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Saddleback Valley Unified school district | County of Orange
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.
Del Lago Elementary math proficiency
Zero+ meets standard.
21% less $meal
25% less $meal
22% less $meal
30% less $meal
31% 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.