Foster City Elementary (Data source)
Source data for Foster City 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 | 2553391 | 2504 | - | 2436 | = | 68 | * | (150 | / | 439) | = | 23.23462413 | ||
| 4 | 2553394 | 2549 | - | 2485 | = | 64 | * | (134 | / | 439) | = | 19.53530746 | ||
| 5 | 2553395 | 2578 | - | 2528 | = | 50 | * | (155 | / | 439) | = | 17.6537585 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Foster City 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 | 77817 | 2501 | - | 2436 | = | 65 | * | (145 | / | 416) | = | 22.65624998 | ||
| 4 | 77820 | 2562 | - | 2485 | = | 77 | * | (136 | / | 416) | = | 25.17307685 | ||
| 5 | 77821 | 2586 | - | 2528 | = | 58 | * | (135 | / | 416) | = | 18.82211534 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Foster City Elementary | 67 | ||||||||||||
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 | 79970 | 2510 | - | 2436 | = | 74 | * | (126 | / | 397) | = | 23.48614605 | ||
| 4 | 79973 | 2555 | - | 2485 | = | 70 | * | (146 | / | 397) | = | 25.74307302 | ||
| 5 | 79974 | 2606 | - | 2528 | = | 78 | * | (125 | / | 397) | = | 24.55919388 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Foster City Elementary | 74 | ||||||||||||
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 | 80119 | 2507 | - | 2436 | = | 71 | * | (121 | / | 388) | = | 22.14175257 | ||
| 4 | 80121 | 2557 | - | 2485 | = | 72 | * | (124 | / | 388) | = | 23.01030922 | ||
| 5 | 80123 | 2586 | - | 2528 | = | 58 | * | (143 | / | 388) | = | 21.37628866 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Foster City Elementary | 67 | ||||||||||||
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 | 80613 | 2531 | - | 2436 | = | 95 | * | (126 | / | 367) | = | 32.61580375 | ||
| 4 | 80614 | 2548 | - | 2485 | = | 63 | * | (117 | / | 367) | = | 20.08446861 | ||
| 5 | 80615 | 2593 | - | 2528 | = | 65 | * | (124 | / | 367) | = | 21.96185284 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Foster City Elementary | 75 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 60 | 67 | 74 | 67 | 75 | 343.0 | 68.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 86.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 50.6
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 | 2% | 2% | 3% | 3% | 4% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Mateo-Foster City 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.
Foster City Elementary math proficiency
Zero+ meets standard.
1% less $meal
1% less $meal
2% less $meal
3% less $meal
4% 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.