Costano Elementary (Data source)
Source data for Costano 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 | 2535610 | 2354 | - | 2436 | = | -82 | * | (68 | / | 356) | = | -15.66292127 | ||
| 4 | 2535613 | 2399 | - | 2485 | = | -86 | * | (55 | / | 356) | = | -13.28651685 | ||
| 5 | 2535614 | 2409 | - | 2528 | = | -119 | * | (61 | / | 356) | = | -20.39044937 | ||
| 6 | 2535617 | 2446 | - | 2552 | = | -106 | * | (59 | / | 356) | = | -17.56741572 | ||
| 7 | 2535618 | 2470 | - | 2567 | = | -97 | * | (53 | / | 356) | = | -14.44101119 | ||
| 8 | 2535621 | 2507 | - | 2586 | = | -79 | * | (60 | / | 356) | = | -13.31460668 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Costano Elementary | -95 | ||||||||||||
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 | 77298 | 2377 | - | 2436 | = | -59 | * | (67 | / | 353) | = | -11.19830024 | ||
| 4 | 77299 | 2378 | - | 2485 | = | -107 | * | (61 | / | 353) | = | -18.49008492 | ||
| 5 | 77301 | 2398 | - | 2528 | = | -130 | * | (58 | / | 353) | = | -21.35977337 | ||
| 6 | 77303 | 2426 | - | 2552 | = | -126 | * | (55 | / | 353) | = | -19.63172799 | ||
| 7 | 77306 | 2444 | - | 2567 | = | -123 | * | (58 | / | 353) | = | -20.20963173 | ||
| 8 | 77307 | 2498 | - | 2586 | = | -88 | * | (54 | / | 353) | = | -13.46175635 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Costano Elementary | -104 | ||||||||||||
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 | 79433 | 2373 | - | 2436 | = | -63 | * | (52 | / | 350) | = | -9.35999996 | ||
| 4 | 79434 | 2374 | - | 2485 | = | -111 | * | (61 | / | 350) | = | -19.34571425 | ||
| 5 | 79437 | 2385 | - | 2528 | = | -143 | * | (61 | / | 350) | = | -24.9228571 | ||
| 6 | 79439 | 2409 | - | 2552 | = | -143 | * | (60 | / | 350) | = | -24.51428565 | ||
| 7 | 79441 | 2436 | - | 2567 | = | -131 | * | (55 | / | 350) | = | -20.58571427 | ||
| 8 | 79442 | 2470 | - | 2586 | = | -116 | * | (61 | / | 350) | = | -20.21714282 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Costano Elementary | -119 | ||||||||||||
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 | 79580 | 2385 | - | 2436 | = | -51 | * | (48 | / | 282) | = | -8.68085102 | ||
| 4 | 79581 | 2400 | - | 2485 | = | -85 | * | (57 | / | 282) | = | -17.18085102 | ||
| 5 | 79584 | 2406 | - | 2528 | = | -122 | * | (58 | / | 282) | = | -25.09219848 | ||
| 7 | 79585 | 2461 | - | 2567 | = | -106 | * | (59 | / | 282) | = | -22.17730495 | ||
| 8 | 79588 | 2436 | - | 2586 | = | -150 | * | (60 | / | 282) | = | -31.91489355 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Costano Elementary | -105 | ||||||||||||
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 | 80092 | 2400 | - | 2436 | = | -36 | * | (39 | / | 181) | = | -7.75690607 | ||
| 4 | 80093 | 2409 | - | 2485 | = | -76 | * | (50 | / | 181) | = | -20.99447507 | ||
| 5 | 80094 | 2398 | - | 2528 | = | -130 | * | (37 | / | 181) | = | -26.57458557 | ||
| 8 | 80095 | 2469 | - | 2586 | = | -117 | * | (55 | / | 181) | = | -35.55248615 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Costano Elementary | -91 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -95 | -104 | -119 | -105 | -91 | -514.0 | -102.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -72.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -132.8
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 | 92% | 91% | 90% | 91% | 93% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Ravenswood City Elementary school district | County of San Mateo
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.
Costano Elementary math proficiency
Zero+ meets standard.
86% less $meal
86% less $meal
82% less $meal
90% less $meal
89% 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 Ravenswood City Elementary (4)
| Belle Haven Elementary | Brentwood Academy | Costano Elementary |
| Willow Oaks Elementary |