Stratford Elementary (Data source)
Source data for Stratford 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 | 556170 | 2369 | - | 2436 | = | -67 | * | (43 | / | 178) | = | -16.18539321 | ||
| 4 | 556171 | 2420 | - | 2485 | = | -65 | * | (23 | / | 178) | = | -8.3988764 | ||
| 5 | 556174 | 2446 | - | 2528 | = | -82 | * | (23 | / | 178) | = | -10.59550561 | ||
| 6 | 556175 | 2455 | - | 2552 | = | -97 | * | (31 | / | 178) | = | -16.89325839 | ||
| 7 | 556178 | 2440 | - | 2567 | = | -127 | * | (29 | / | 178) | = | -20.6910112 | ||
| 8 | 556179 | 2500 | - | 2586 | = | -86 | * | (29 | / | 178) | = | -14.01123593 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Stratford Elementary | -87 | ||||||||||||
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 | 17659 | 2413 | - | 2436 | = | -23 | * | (25 | / | 172) | = | -3.34302325 | ||
| 4 | 17660 | 2432 | - | 2485 | = | -53 | * | (37 | / | 172) | = | -11.40116279 | ||
| 5 | 17663 | 2463 | - | 2528 | = | -65 | * | (28 | / | 172) | = | -10.58139531 | ||
| 6 | 17665 | 2477 | - | 2552 | = | -75 | * | (22 | / | 172) | = | -9.5930232 | ||
| 7 | 17666 | 2484 | - | 2567 | = | -83 | * | (30 | / | 172) | = | -14.47674413 | ||
| 8 | 17668 | 2499 | - | 2586 | = | -87 | * | (30 | / | 172) | = | -15.17441855 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Stratford Elementary | -65 | ||||||||||||
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 | 17999 | 2412 | - | 2436 | = | -24 | * | (24 | / | 179) | = | -3.21787709 | ||
| 4 | 18000 | 2452 | - | 2485 | = | -33 | * | (31 | / | 179) | = | -5.71508378 | ||
| 5 | 18002 | 2434 | - | 2528 | = | -94 | * | (39 | / | 179) | = | -20.48044684 | ||
| 6 | 18005 | 2493 | - | 2552 | = | -59 | * | (30 | / | 179) | = | -9.88826814 | ||
| 7 | 18006 | 2474 | - | 2567 | = | -93 | * | (23 | / | 179) | = | -11.94972066 | ||
| 8 | 18008 | 2429 | - | 2586 | = | -157 | * | (32 | / | 179) | = | -28.06703899 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Stratford Elementary | -79 | ||||||||||||
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 | 18012 | 2424 | - | 2436 | = | -12 | * | (38 | / | 180) | = | -2.53333333 | ||
| 4 | 18013 | 2462 | - | 2485 | = | -23 | * | (24 | / | 180) | = | -3.06666666 | ||
| 5 | 18016 | 2471 | - | 2528 | = | -57 | * | (29 | / | 180) | = | -9.18333333 | ||
| 6 | 18017 | 2464 | - | 2552 | = | -88 | * | (33 | / | 180) | = | -16.1333333 | ||
| 7 | 18020 | 2497 | - | 2567 | = | -70 | * | (31 | / | 180) | = | -12.05555554 | ||
| 8 | 18021 | 2535 | - | 2586 | = | -51 | * | (25 | / | 180) | = | -7.08333329 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Stratford Elementary | -50 | ||||||||||||
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 | 18160 | 2405 | - | 2436 | = | -31 | * | (31 | / | 187) | = | -5.13903743 | ||
| 4 | 18161 | 2499 | - | 2485 | = | 14 | * | (39 | / | 187) | = | 2.91978609 | ||
| 5 | 18162 | 2473 | - | 2528 | = | -55 | * | (24 | / | 187) | = | -7.05882348 | ||
| 6 | 18163 | 2514 | - | 2552 | = | -38 | * | (30 | / | 187) | = | -6.09625667 | ||
| 7 | 18164 | 2515 | - | 2567 | = | -52 | * | (30 | / | 187) | = | -8.34224596 | ||
| 8 | 18165 | 2542 | - | 2586 | = | -44 | * | (33 | / | 187) | = | -7.76470587 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Stratford Elementary | -31 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -87 | -65 | -79 | -50 | -31 | -312.0 | -62.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 3.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -128.4
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 | 82% | 84% | 80% | 80% | 80% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Central Union Elementary school district | County of Kings
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.
Stratford Elementary math proficiency
Zero+ meets standard.
75% less $meal
69% less $meal
67% less $meal
74% less $meal
72% 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.
Elementary School (Public) schools in Central Union Elementary (4)
| Akers Elementary | Central Elementary | R. J. Neutra |
| Stratford Elementary |