Cobb Mountain Elementary (Data source)
Source data for Cobb Mountain 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 | 583773 | 2402 | - | 2436 | = | -34 | * | (16 | / | 90) | = | -6.04444442 | ||
| 4 | 583776 | 2480 | - | 2485 | = | -5 | * | (28 | / | 90) | = | -1.55555556 | ||
| 5 | 583777 | 2535 | - | 2528 | = | 7 | * | (25 | / | 90) | = | 1.94444444 | ||
| 6 | 583780 | 2564 | - | 2552 | = | 12 | * | (21 | / | 90) | = | 2.8 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cobb Mountain Elementary | -3 | ||||||||||||
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 | 18626 | 2454 | - | 2436 | = | 18 | * | (21 | / | 83) | = | 4.55421686 | ||
| 4 | 18629 | 2470 | - | 2485 | = | -15 | * | (14 | / | 83) | = | -2.53012047 | ||
| 5 | 18631 | 2517 | - | 2528 | = | -11 | * | (27 | / | 83) | = | -3.57831324 | ||
| 6 | 18632 | 2524 | - | 2552 | = | -28 | * | (21 | / | 83) | = | -7.08433734 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cobb Mountain Elementary | -9 | ||||||||||||
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 | 18959 | 2457 | - | 2436 | = | 21 | * | (15 | / | 81) | = | 3.88888889 | ||
| 4 | 18961 | 2496 | - | 2485 | = | 11 | * | (20 | / | 81) | = | 2.71604938 | ||
| 5 | 18963 | 2493 | - | 2528 | = | -35 | * | (17 | / | 81) | = | -7.34567901 | ||
| 6 | 18966 | 2541 | - | 2552 | = | -11 | * | (29 | / | 81) | = | -3.9382716 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cobb Mountain Elementary | -5 | ||||||||||||
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 | 18969 | 2438 | - | 2436 | = | 2 | * | (26 | / | 78) | = | 0.66666667 | ||
| 4 | 18972 | 2461 | - | 2485 | = | -24 | * | (17 | / | 78) | = | -5.23076921 | ||
| 5 | 18973 | 2541 | - | 2528 | = | 13 | * | (19 | / | 78) | = | 3.16666666 | ||
| 6 | 18976 | 2542 | - | 2552 | = | -10 | * | (16 | / | 78) | = | -2.05128205 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cobb Mountain Elementary | -3 | ||||||||||||
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 | 19125 | 2459 | - | 2436 | = | 23 | * | (14 | / | 83) | = | 3.87951805 | ||
| 4 | 19126 | 2459 | - | 2485 | = | -26 | * | (28 | / | 83) | = | -8.77108432 | ||
| 5 | 19127 | 2508 | - | 2528 | = | -20 | * | (18 | / | 83) | = | -4.33734938 | ||
| 6 | 19128 | 2559 | - | 2552 | = | 7 | * | (23 | / | 83) | = | 1.93975903 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cobb Mountain Elementary | -7 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -3 | -9 | -5 | -3 | -7 | -27.0 | -5.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 0.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -11.4
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 | 61% | 84% | 75% | 70% | 52% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Middletown Unified school district | County of Lake
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.
Cobb Mountain Elementary math proficiency
Zero+ meets standard.
51% less $meal
77% less $meal
67% less $meal
66% less $meal
45% 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 Middletown Unified (3)
| Cobb Mountain Elementary | Coyote Valley Elementary | Minnie Cannon Elementary |