Durfee Elementary (Data source)
Source data for Durfee 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 | 690154 | 2384 | - | 2436 | = | -52 | * | (101 | / | 796) | = | -6.59798994 | ||
| 4 | 690155 | 2413 | - | 2485 | = | -72 | * | (113 | / | 796) | = | -10.22110546 | ||
| 5 | 690158 | 2463 | - | 2528 | = | -65 | * | (118 | / | 796) | = | -9.63567839 | ||
| 6 | 690159 | 2528 | - | 2552 | = | -24 | * | (96 | / | 796) | = | -2.89447236 | ||
| 7 | 690162 | 2524 | - | 2567 | = | -43 | * | (170 | / | 796) | = | -9.18341708 | ||
| 8 | 690163 | 2551 | - | 2586 | = | -35 | * | (198 | / | 796) | = | -8.70603013 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Durfee Elementary | -47 | ||||||||||||
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 | 21818 | 2440 | - | 2436 | = | 4 | * | (116 | / | 777) | = | 0.5971686 | ||
| 4 | 21820 | 2469 | - | 2485 | = | -16 | * | (106 | / | 777) | = | -2.18275418 | ||
| 5 | 21823 | 2471 | - | 2528 | = | -57 | * | (111 | / | 777) | = | -8.14285709 | ||
| 6 | 21824 | 2509 | - | 2552 | = | -43 | * | (119 | / | 777) | = | -6.58558558 | ||
| 7 | 21827 | 2548 | - | 2567 | = | -19 | * | (159 | / | 777) | = | -3.88803088 | ||
| 8 | 21829 | 2583 | - | 2586 | = | -3 | * | (166 | / | 777) | = | -0.64092664 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Durfee Elementary | -21 | ||||||||||||
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 | 22235 | 2447 | - | 2436 | = | 11 | * | (81 | / | 745) | = | 1.19597315 | ||
| 4 | 22238 | 2471 | - | 2485 | = | -14 | * | (111 | / | 745) | = | -2.08590603 | ||
| 5 | 22239 | 2494 | - | 2528 | = | -34 | * | (100 | / | 745) | = | -4.56375836 | ||
| 6 | 22241 | 2506 | - | 2552 | = | -46 | * | (118 | / | 745) | = | -7.28590601 | ||
| 7 | 22243 | 2545 | - | 2567 | = | -22 | * | (178 | / | 745) | = | -5.25637583 | ||
| 8 | 22245 | 2571 | - | 2586 | = | -15 | * | (157 | / | 745) | = | -3.16107383 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Durfee 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 | 22222 | 2456 | - | 2436 | = | 20 | * | (75 | / | 725) | = | 2.0689655 | ||
| 4 | 22224 | 2474 | - | 2485 | = | -11 | * | (87 | / | 725) | = | -1.32 | ||
| 5 | 22226 | 2501 | - | 2528 | = | -27 | * | (114 | / | 725) | = | -4.24551723 | ||
| 6 | 22228 | 2530 | - | 2552 | = | -22 | * | (110 | / | 725) | = | -3.33793101 | ||
| 7 | 22230 | 2543 | - | 2567 | = | -24 | * | (159 | / | 725) | = | -5.26344826 | ||
| 8 | 22232 | 2574 | - | 2586 | = | -12 | * | (180 | / | 725) | = | -2.97931034 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Durfee Elementary | -15 | ||||||||||||
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 | 22403 | 2464 | - | 2436 | = | 28 | * | (71 | / | 701) | = | 2.83594864 | ||
| 4 | 22404 | 2481 | - | 2485 | = | -4 | * | (81 | / | 701) | = | -0.46219686 | ||
| 5 | 22405 | 2508 | - | 2528 | = | -20 | * | (88 | / | 701) | = | -2.510699 | ||
| 6 | 22406 | 2544 | - | 2552 | = | -8 | * | (120 | / | 701) | = | -1.36947218 | ||
| 7 | 22407 | 2563 | - | 2567 | = | -4 | * | (176 | / | 701) | = | -1.0042796 | ||
| 8 | 22408 | 2580 | - | 2586 | = | -6 | * | (165 | / | 701) | = | -1.41226819 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Durfee Elementary | -4 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -47 | -21 | -21 | -15 | -4 | -108.0 | -21.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 23.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -66.6
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 | 90% | 83% | 85% | 90% | 94% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
El Monte City school district | County of Los Angeles
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.
Durfee Elementary math proficiency
Zero+ meets standard.
80% less $meal
73% less $meal
74% less $meal
84% less $meal
85% 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.