John J. Montgomery Elementary (Data source)
Source data for John J. Montgomery 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 | 2649892 | 2406 | - | 2436 | = | -30 | * | (85 | / | 390) | = | -6.53846151 | ||
| 4 | 2649895 | 2441 | - | 2485 | = | -44 | * | (96 | / | 390) | = | -10.83076922 | ||
| 5 | 2649896 | 2453 | - | 2528 | = | -75 | * | (99 | / | 390) | = | -19.03846148 | ||
| 6 | 2649899 | 2512 | - | 2552 | = | -40 | * | (110 | / | 390) | = | -11.28205128 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for John J. Montgomery Elementary | -48 | ||||||||||||
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 | 80781 | 2393 | - | 2436 | = | -43 | * | (78 | / | 354) | = | -9.47457627 | ||
| 4 | 80783 | 2438 | - | 2485 | = | -47 | * | (91 | / | 354) | = | -12.08192086 | ||
| 5 | 80786 | 2471 | - | 2528 | = | -57 | * | (93 | / | 354) | = | -14.97457625 | ||
| 6 | 80787 | 2490 | - | 2552 | = | -62 | * | (92 | / | 354) | = | -16.11299431 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for John J. Montgomery Elementary | -53 | ||||||||||||
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 | 83011 | 2408 | - | 2436 | = | -28 | * | (55 | / | 311) | = | -4.95176847 | ||
| 4 | 83013 | 2431 | - | 2485 | = | -54 | * | (78 | / | 311) | = | -13.54340833 | ||
| 5 | 83015 | 2457 | - | 2528 | = | -71 | * | (92 | / | 311) | = | -21.00321539 | ||
| 6 | 83017 | 2475 | - | 2552 | = | -77 | * | (86 | / | 311) | = | -21.29260449 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for John J. Montgomery Elementary | -61 | ||||||||||||
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 | 83228 | 2411 | - | 2436 | = | -25 | * | (71 | / | 291) | = | -6.09965635 | ||
| 4 | 83230 | 2466 | - | 2485 | = | -19 | * | (61 | / | 291) | = | -3.98281787 | ||
| 5 | 83232 | 2451 | - | 2528 | = | -77 | * | (73 | / | 291) | = | -19.31615116 | ||
| 6 | 83234 | 2489 | - | 2552 | = | -63 | * | (86 | / | 291) | = | -18.6185567 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for John J. Montgomery Elementary | -48 | ||||||||||||
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 | 83841 | 2411 | - | 2436 | = | -25 | * | (71 | / | 280) | = | -6.3392857 | ||
| 4 | 83842 | 2458 | - | 2485 | = | -27 | * | (67 | / | 280) | = | -6.46071428 | ||
| 5 | 83843 | 2460 | - | 2528 | = | -68 | * | (62 | / | 280) | = | -15.05714283 | ||
| 6 | 83844 | 2496 | - | 2552 | = | -56 | * | (80 | / | 280) | = | -15.99999996 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for John J. Montgomery Elementary | -44 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -48 | -53 | -61 | -48 | -44 | -254.0 | -50.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -32.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -68.8
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 | 60% | 60% | 57% | 60% | 51% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Evergreen 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.
John J. Montgomery Elementary math proficiency
Zero+ meets standard.
48% less $meal
49% less $meal
45% less $meal
49% less $meal
44% 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.