Cabrillo Elementary (Data source)
Source data for Cabrillo 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 | 30365 | 2412 | - | 2436 | = | -24 | * | (54 | / | 218) | = | -5.94495413 | ||
| 4 | 30368 | 2465 | - | 2485 | = | -20 | * | (62 | / | 218) | = | -5.68807338 | ||
| 5 | 30369 | 2462 | - | 2528 | = | -66 | * | (56 | / | 218) | = | -16.95412838 | ||
| 6 | 30372 | 2522 | - | 2552 | = | -30 | * | (46 | / | 218) | = | -6.33027522 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cabrillo Elementary | -35 | ||||||||||||
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 | 806 | 2413 | - | 2436 | = | -23 | * | (67 | / | 258) | = | -5.97286821 | ||
| 4 | 808 | 2451 | - | 2485 | = | -34 | * | (67 | / | 258) | = | -8.82945735 | ||
| 5 | 810 | 2493 | - | 2528 | = | -35 | * | (66 | / | 258) | = | -8.95348836 | ||
| 6 | 811 | 2489 | - | 2552 | = | -63 | * | (58 | / | 258) | = | -14.16279066 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cabrillo Elementary | -38 | ||||||||||||
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 | 860 | 2394 | - | 2436 | = | -42 | * | (63 | / | 234) | = | -11.3076923 | ||
| 4 | 862 | 2447 | - | 2485 | = | -38 | * | (61 | / | 234) | = | -9.90598288 | ||
| 5 | 863 | 2490 | - | 2528 | = | -38 | * | (51 | / | 234) | = | -8.28205125 | ||
| 6 | 865 | 2538 | - | 2552 | = | -14 | * | (59 | / | 234) | = | -3.52991453 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cabrillo Elementary | -33 | ||||||||||||
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 | 884 | 2438 | - | 2436 | = | 2 | * | (51 | / | 226) | = | 0.45132743 | ||
| 4 | 886 | 2467 | - | 2485 | = | -18 | * | (66 | / | 226) | = | -5.25663716 | ||
| 5 | 888 | 2493 | - | 2528 | = | -35 | * | (63 | / | 226) | = | -9.75663714 | ||
| 6 | 890 | 2537 | - | 2552 | = | -15 | * | (46 | / | 226) | = | -3.05309735 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cabrillo Elementary | -18 | ||||||||||||
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 | 912 | 2441 | - | 2436 | = | 5 | * | (58 | / | 221) | = | 1.31221719 | ||
| 4 | 913 | 2448 | - | 2485 | = | -37 | * | (42 | / | 221) | = | -7.03167418 | ||
| 5 | 914 | 2481 | - | 2528 | = | -47 | * | (61 | / | 221) | = | -12.97285065 | ||
| 6 | 915 | 2496 | - | 2552 | = | -56 | * | (60 | / | 221) | = | -15.20361987 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cabrillo Elementary | -34 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -35 | -38 | -33 | -18 | -34 | -158.0 | -31.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -10.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -52.6
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 | 56% | 52% | 46% | 51% | 53% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Fremont Unified school district | County of Alameda
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.
Cabrillo Elementary math proficiency
Zero+ meets standard.
46% less $meal
45% less $meal
36% less $meal
39% less $meal
42% 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.