Lange (Dorothea) Elementary (Data source)
Source data for Lange (Dorothea) 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 | 2484764 | 2397 | - | 2436 | = | -39 | * | (74 | / | 333) | = | -8.66666666 | ||
| 4 | 2484765 | 2451 | - | 2485 | = | -34 | * | (83 | / | 333) | = | -8.47447447 | ||
| 5 | 2484768 | 2483 | - | 2528 | = | -45 | * | (93 | / | 333) | = | -12.56756756 | ||
| 6 | 2484769 | 2528 | - | 2552 | = | -24 | * | (83 | / | 333) | = | -5.98198198 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lange (Dorothea) Elementary | -36 | ||||||||||||
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 | 75752 | 2426 | - | 2436 | = | -10 | * | (79 | / | 342) | = | -2.30994152 | ||
| 4 | 75754 | 2453 | - | 2485 | = | -32 | * | (79 | / | 342) | = | -7.39181286 | ||
| 5 | 75755 | 2488 | - | 2528 | = | -40 | * | (88 | / | 342) | = | -10.29239764 | ||
| 6 | 75757 | 2530 | - | 2552 | = | -22 | * | (96 | / | 342) | = | -6.17543859 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lange (Dorothea) Elementary | -26 | ||||||||||||
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 | 77781 | 2404 | - | 2436 | = | -32 | * | (71 | / | 313) | = | -7.25878592 | ||
| 4 | 77782 | 2454 | - | 2485 | = | -31 | * | (79 | / | 313) | = | -7.82428115 | ||
| 5 | 77785 | 2473 | - | 2528 | = | -55 | * | (75 | / | 313) | = | -13.17891372 | ||
| 6 | 77786 | 2509 | - | 2552 | = | -43 | * | (88 | / | 313) | = | -12.08945684 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lange (Dorothea) Elementary | -40 | ||||||||||||
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 | 77947 | 2420 | - | 2436 | = | -16 | * | (76 | / | 307) | = | -3.96091205 | ||
| 4 | 77949 | 2453 | - | 2485 | = | -32 | * | (72 | / | 307) | = | -7.50488598 | ||
| 5 | 77952 | 2489 | - | 2528 | = | -39 | * | (79 | / | 307) | = | -10.03583061 | ||
| 6 | 77953 | 2493 | - | 2552 | = | -59 | * | (80 | / | 307) | = | -15.37459282 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lange (Dorothea) Elementary | -37 | ||||||||||||
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 | 78480 | 2433 | - | 2436 | = | -3 | * | (78 | / | 324) | = | -0.72222222 | ||
| 4 | 78481 | 2470 | - | 2485 | = | -15 | * | (82 | / | 324) | = | -3.79629629 | ||
| 5 | 78482 | 2475 | - | 2528 | = | -53 | * | (77 | / | 324) | = | -12.59567896 | ||
| 6 | 78483 | 2516 | - | 2552 | = | -36 | * | (87 | / | 324) | = | -9.66666665 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lange (Dorothea) Elementary | -27 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -36 | -26 | -40 | -37 | -27 | -166.0 | -33.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -15.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -51.2
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 | 59% | 60% | 55% | 56% | 56% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lucia Mar 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.
Lange (Dorothea) Elementary math proficiency
Zero+ meets standard.
48% less $meal
49% less $meal
43% less $meal
49% less $meal
47% 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.