Fort Irwin Middle (Data source)
Source data for Fort Irwin Middle
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 |
||
| 6 | 2081443 | 2518 | - | 2552 | = | -34 | * | (122 | / | 328) | = | -12.64634145 | ||
| 7 | 2081446 | 2510 | - | 2567 | = | -57 | * | (100 | / | 328) | = | -17.37804874 | ||
| 8 | 2081447 | 2530 | - | 2586 | = | -56 | * | (106 | / | 328) | = | -18.09756094 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Fort Irwin Middle | -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 |
||
| 6 | 63975 | 2527 | - | 2552 | = | -25 | * | (90 | / | 259) | = | -8.68725868 | ||
| 7 | 63976 | 2532 | - | 2567 | = | -35 | * | (92 | / | 259) | = | -12.43243243 | ||
| 8 | 63978 | 2541 | - | 2586 | = | -45 | * | (77 | / | 259) | = | -13.37837837 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Fort Irwin Middle | -34 | ||||||||||||
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 |
||
| 6 | 65766 | 2535 | - | 2552 | = | -17 | * | (106 | / | 270) | = | -6.67407406 | ||
| 7 | 65769 | 2524 | - | 2567 | = | -43 | * | (91 | / | 270) | = | -14.49259259 | ||
| 8 | 65771 | 2519 | - | 2586 | = | -67 | * | (73 | / | 270) | = | -18.11481479 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Fort Irwin Middle | -39 | ||||||||||||
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 |
||
| 6 | 65846 | 2541 | - | 2552 | = | -11 | * | (111 | / | 260) | = | -4.69615384 | ||
| 7 | 65849 | 2544 | - | 2567 | = | -23 | * | (78 | / | 260) | = | -6.9 | ||
| 8 | 65850 | 2568 | - | 2586 | = | -18 | * | (71 | / | 260) | = | -4.91538461 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Fort Irwin Middle | -17 | ||||||||||||
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 |
||
| 6 | 66229 | 2522 | - | 2552 | = | -30 | * | (94 | / | 276) | = | -10.2173913 | ||
| 7 | 66230 | 2551 | - | 2567 | = | -16 | * | (106 | / | 276) | = | -6.14492754 | ||
| 8 | 66231 | 2569 | - | 2586 | = | -17 | * | (76 | / | 276) | = | -4.68115941 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Fort Irwin Middle | -21 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -48 | -34 | -39 | -17 | -21 | -159.0 | -31.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 4.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -67.8
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 | 41% | 37% | 42% | 48% | 40% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Silver Valley Unified school district County of San Bernardino
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Fort Irwin Middle math proficiency
Zero+ meets standard.
18% less $meal
14% less $meal
20% less $meal
20% less $meal
15% 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.
Intermediate/Middle Schools (Public) schools in Silver Valley Unified (1)
| Fort Irwin Middle |