Pearl Zanker Elementary (Data source)
Source data for Pearl Zanker 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 | 2738618 | 2459 | - | 2436 | = | 23 | * | (91 | / | 348) | = | 6.0143678 | ||
| 4 | 2738621 | 2520 | - | 2485 | = | 35 | * | (95 | / | 348) | = | 9.55459768 | ||
| 5 | 2738622 | 2537 | - | 2528 | = | 9 | * | (79 | / | 348) | = | 2.04310345 | ||
| 6 | 2738625 | 2535 | - | 2552 | = | -17 | * | (83 | / | 348) | = | -4.0545977 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Pearl Zanker Elementary | 14 | ||||||||||||
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 | 83244 | 2471 | - | 2436 | = | 35 | * | (117 | / | 387) | = | 10.58139534 | ||
| 4 | 83246 | 2497 | - | 2485 | = | 12 | * | (89 | / | 387) | = | 2.75968992 | ||
| 5 | 83248 | 2527 | - | 2528 | = | -1 | * | (101 | / | 387) | = | -0.26098191 | ||
| 6 | 83251 | 2573 | - | 2552 | = | 21 | * | (80 | / | 387) | = | 4.34108527 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Pearl Zanker Elementary | 17 | ||||||||||||
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 | 85581 | 2469 | - | 2436 | = | 33 | * | (92 | / | 380) | = | 7.98947368 | ||
| 4 | 85582 | 2508 | - | 2485 | = | 23 | * | (108 | / | 380) | = | 6.5368421 | ||
| 5 | 85585 | 2512 | - | 2528 | = | -16 | * | (90 | / | 380) | = | -3.78947368 | ||
| 6 | 85587 | 2574 | - | 2552 | = | 22 | * | (90 | / | 380) | = | 5.21052631 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Pearl Zanker Elementary | 16 | ||||||||||||
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 | 85802 | 2483 | - | 2436 | = | 47 | * | (91 | / | 374) | = | 11.43582888 | ||
| 4 | 85804 | 2511 | - | 2485 | = | 26 | * | (97 | / | 374) | = | 6.74331549 | ||
| 5 | 85806 | 2526 | - | 2528 | = | -2 | * | (96 | / | 374) | = | -0.51336898 | ||
| 6 | 85808 | 2575 | - | 2552 | = | 23 | * | (90 | / | 374) | = | 5.53475935 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Pearl Zanker Elementary | 23 | ||||||||||||
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 | 86395 | 2486 | - | 2436 | = | 50 | * | (98 | / | 361) | = | 13.5734072 | ||
| 4 | 86396 | 2527 | - | 2485 | = | 42 | * | (88 | / | 361) | = | 10.23822715 | ||
| 5 | 86397 | 2531 | - | 2528 | = | 3 | * | (86 | / | 361) | = | 0.71468144 | ||
| 6 | 86398 | 2588 | - | 2552 | = | 36 | * | (89 | / | 361) | = | 8.87534626 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Pearl Zanker Elementary | 33 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 14 | 17 | 16 | 23 | 33 | 103.0 | 20.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 41.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -0.4
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 | 26% | 25% | 24% | 27% | 26% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Milpitas Unified 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.
Pearl Zanker Elementary math proficiency
Zero+ meets standard.
19% less $meal
18% less $meal
17% less $meal
24% less $meal
21% 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.