Corvallis Elementary (Data source)
Source data for Corvallis 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 | 111729 | 2377 | - | 2436 | = | -59 | * | (115 | / | 326) | = | -20.81288342 | ||
| 4 | 111730 | 2430 | - | 2485 | = | -55 | * | (120 | / | 326) | = | -20.24539875 | ||
| 5 | 111733 | 2460 | - | 2528 | = | -68 | * | (91 | / | 326) | = | -18.98159507 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Corvallis Elementary | -60 | ||||||||||||
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 | 3119 | 2414 | - | 2436 | = | -22 | * | (93 | / | 321) | = | -6.37383177 | ||
| 4 | 3121 | 2434 | - | 2485 | = | -51 | * | (117 | / | 321) | = | -18.58878503 | ||
| 5 | 3123 | 2446 | - | 2528 | = | -82 | * | (111 | / | 321) | = | -28.35514014 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Corvallis Elementary | -53 | ||||||||||||
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 | 3231 | 2411 | - | 2436 | = | -25 | * | (93 | / | 284) | = | -8.1866197 | ||
| 4 | 3234 | 2441 | - | 2485 | = | -44 | * | (93 | / | 284) | = | -14.40845067 | ||
| 5 | 3235 | 2434 | - | 2528 | = | -94 | * | (98 | / | 284) | = | -32.43661967 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Corvallis Elementary | -55 | ||||||||||||
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 | 3227 | 2412 | - | 2436 | = | -24 | * | (76 | / | 254) | = | -7.18110235 | ||
| 4 | 3230 | 2450 | - | 2485 | = | -35 | * | (90 | / | 254) | = | -12.40157478 | ||
| 5 | 3231 | 2432 | - | 2528 | = | -96 | * | (88 | / | 254) | = | -33.25984243 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Corvallis Elementary | -53 | ||||||||||||
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 | 3257 | 2379 | - | 2436 | = | -57 | * | (72 | / | 230) | = | -17.84347825 | ||
| 4 | 3258 | 2452 | - | 2485 | = | -33 | * | (76 | / | 230) | = | -10.90434781 | ||
| 5 | 3259 | 2445 | - | 2528 | = | -83 | * | (82 | / | 230) | = | -29.59130434 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Corvallis Elementary | -58 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -60 | -53 | -55 | -53 | -58 | -279.0 | -55.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -46.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -64.8
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 | 60% | 60% | 64% | 64% | 62% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Lorenzo 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.
Corvallis Elementary math proficiency
Zero+ meets standard.
49% less $meal
49% less $meal
52% less $meal
52% less $meal
54% 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 San Lorenzo Unified (9)
| Bay Elementary | Colonial Acres Elementary | Corvallis Elementary |
| Dayton Elementary | Del Rey Elementary | Grant Elementary |
| Hesperian Elementary | Hillside Elementary | Lorenzo Manor Elementary |