Bay Elementary (Data source)
Source data for Bay 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 | 110756 | 2401 | - | 2436 | = | -35 | * | (79 | / | 256) | = | -10.80078125 | ||
| 4 | 110759 | 2455 | - | 2485 | = | -30 | * | (106 | / | 256) | = | -12.421875 | ||
| 5 | 110760 | 2487 | - | 2528 | = | -41 | * | (71 | / | 256) | = | -11.37109375 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Bay 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 | 3096 | 2420 | - | 2436 | = | -16 | * | (81 | / | 253) | = | -5.12252963 | ||
| 4 | 3098 | 2468 | - | 2485 | = | -17 | * | (86 | / | 253) | = | -5.77865612 | ||
| 5 | 3100 | 2460 | - | 2528 | = | -68 | * | (86 | / | 253) | = | -23.11462446 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Bay Elementary | -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 |
||
| 3 | 3208 | 2413 | - | 2436 | = | -23 | * | (89 | / | 237) | = | -8.6371308 | ||
| 4 | 3210 | 2455 | - | 2485 | = | -30 | * | (77 | / | 237) | = | -9.74683542 | ||
| 5 | 3211 | 2513 | - | 2528 | = | -15 | * | (71 | / | 237) | = | -4.49367089 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Bay Elementary | -23 | ||||||||||||
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 | 3203 | 2419 | - | 2436 | = | -17 | * | (69 | / | 211) | = | -5.55924171 | ||
| 4 | 3205 | 2464 | - | 2485 | = | -21 | * | (84 | / | 211) | = | -8.36018957 | ||
| 5 | 3207 | 2488 | - | 2528 | = | -40 | * | (58 | / | 211) | = | -10.99526064 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Bay Elementary | -25 | ||||||||||||
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 | 3233 | 2436 | - | 2436 | = | 0 | * | (75 | / | 218) | = | 0.0 | ||
| 4 | 3234 | 2451 | - | 2485 | = | -34 | * | (71 | / | 218) | = | -11.07339448 | ||
| 5 | 3235 | 2475 | - | 2528 | = | -53 | * | (72 | / | 218) | = | -17.50458714 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Bay Elementary | -29 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -35 | -34 | -23 | -25 | -29 | -146.0 | -29.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -14.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -44.2
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 | 54% | 52% | 52% | 54% | 52% |
| 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.
Bay Elementary math proficiency
Zero+ meets standard.
40% less $meal
42% less $meal
40% less $meal
45% 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.
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 |