Linda Vista Elementary (Data source)
Source data for Linda Vista 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 | 2618391 | 2398 | - | 2436 | = | -38 | * | (90 | / | 287) | = | -11.9163763 | ||
| 4 | 2618392 | 2441 | - | 2485 | = | -44 | * | (96 | / | 287) | = | -14.71777001 | ||
| 5 | 2618395 | 2462 | - | 2528 | = | -66 | * | (101 | / | 287) | = | -23.22648082 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Linda Vista Elementary | -50 | ||||||||||||
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 | 79901 | 2440 | - | 2436 | = | 4 | * | (64 | / | 252) | = | 1.01587301 | ||
| 4 | 79903 | 2440 | - | 2485 | = | -45 | * | (89 | / | 252) | = | -15.89285714 | ||
| 5 | 79906 | 2486 | - | 2528 | = | -42 | * | (99 | / | 252) | = | -16.49999996 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Linda Vista Elementary | -31 | ||||||||||||
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 | 82087 | 2437 | - | 2436 | = | 1 | * | (89 | / | 245) | = | 0.36326531 | ||
| 4 | 82088 | 2464 | - | 2485 | = | -21 | * | (66 | / | 245) | = | -5.65714286 | ||
| 5 | 82091 | 2486 | - | 2528 | = | -42 | * | (90 | / | 245) | = | -15.4285714 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Linda Vista Elementary | -21 | ||||||||||||
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 | 82286 | 2445 | - | 2436 | = | 9 | * | (77 | / | 233) | = | 2.97424893 | ||
| 4 | 82287 | 2467 | - | 2485 | = | -18 | * | (86 | / | 233) | = | -6.64377682 | ||
| 5 | 82290 | 2498 | - | 2528 | = | -30 | * | (70 | / | 233) | = | -9.01287552 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Linda Vista Elementary | -13 | ||||||||||||
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 | 82900 | 2434 | - | 2436 | = | -2 | * | (92 | / | 241) | = | -0.76348548 | ||
| 4 | 82901 | 2448 | - | 2485 | = | -37 | * | (69 | / | 241) | = | -10.59336096 | ||
| 5 | 82902 | 2482 | - | 2528 | = | -46 | * | (80 | / | 241) | = | -15.26970952 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Linda Vista Elementary | -27 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -50 | -31 | -21 | -13 | -27 | -142.0 | -28.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 10.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -67.4
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 | 79% | 81% | 79% | 72% | 72% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Alum Rock Union Elementary school district | County of Santa Clara
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.
Linda Vista Elementary math proficiency
Zero+ meets standard.
62% less $meal
67% less $meal
65% less $meal
58% less $meal
57% 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.