River Glen (Data source)
Source data for River Glen
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 | 2710689 | 2419 | - | 2436 | = | -17 | * | (60 | / | 347) | = | -2.93948125 | ||
| 4 | 2710692 | 2458 | - | 2485 | = | -27 | * | (62 | / | 347) | = | -4.82420748 | ||
| 5 | 2710693 | 2473 | - | 2528 | = | -55 | * | (58 | / | 347) | = | -9.19308357 | ||
| 6 | 2710696 | 2562 | - | 2552 | = | 10 | * | (60 | / | 347) | = | 1.72910662 | ||
| 7 | 2710697 | 2548 | - | 2567 | = | -19 | * | (55 | / | 347) | = | -3.01152736 | ||
| 8 | 2710700 | 2550 | - | 2586 | = | -36 | * | (52 | / | 347) | = | -5.39481265 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for River Glen | -24 | ||||||||||||
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 | 82532 | 2448 | - | 2436 | = | 12 | * | (59 | / | 341) | = | 2.07624632 | ||
| 4 | 82535 | 2471 | - | 2485 | = | -14 | * | (62 | / | 341) | = | -2.54545453 | ||
| 5 | 82536 | 2485 | - | 2528 | = | -43 | * | (60 | / | 341) | = | -7.5659824 | ||
| 6 | 82538 | 2564 | - | 2552 | = | 12 | * | (51 | / | 341) | = | 1.7947214 | ||
| 7 | 82541 | 2560 | - | 2567 | = | -7 | * | (56 | / | 341) | = | -1.14956011 | ||
| 8 | 82543 | 2580 | - | 2586 | = | -6 | * | (53 | / | 341) | = | -0.93255131 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for River Glen | -8 | ||||||||||||
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 | 84824 | 2428 | - | 2436 | = | -8 | * | (59 | / | 338) | = | -1.3964497 | ||
| 4 | 84826 | 2495 | - | 2485 | = | 10 | * | (59 | / | 338) | = | 1.74556213 | ||
| 5 | 84828 | 2480 | - | 2528 | = | -48 | * | (62 | / | 338) | = | -8.8047337 | ||
| 6 | 84830 | 2544 | - | 2552 | = | -8 | * | (57 | / | 338) | = | -1.34911242 | ||
| 7 | 84832 | 2576 | - | 2567 | = | 9 | * | (47 | / | 338) | = | 1.25147929 | ||
| 8 | 84835 | 2604 | - | 2586 | = | 18 | * | (54 | / | 338) | = | 2.87573963 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for River Glen | -6 | ||||||||||||
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 | 85041 | 2416 | - | 2436 | = | -20 | * | (60 | / | 336) | = | -3.57142856 | ||
| 4 | 85043 | 2466 | - | 2485 | = | -19 | * | (61 | / | 336) | = | -3.44940476 | ||
| 5 | 85045 | 2504 | - | 2528 | = | -24 | * | (59 | / | 336) | = | -4.21428571 | ||
| 6 | 85047 | 2512 | - | 2552 | = | -40 | * | (57 | / | 336) | = | -6.78571428 | ||
| 7 | 85049 | 2563 | - | 2567 | = | -4 | * | (53 | / | 336) | = | -0.63095238 | ||
| 8 | 85051 | 2569 | - | 2586 | = | -17 | * | (46 | / | 336) | = | -2.32738094 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for River Glen | -21 | ||||||||||||
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 | 85637 | 2429 | - | 2436 | = | -7 | * | (56 | / | 330) | = | -1.18787878 | ||
| 4 | 85638 | 2440 | - | 2485 | = | -45 | * | (61 | / | 330) | = | -8.31818178 | ||
| 5 | 85639 | 2477 | - | 2528 | = | -51 | * | (60 | / | 330) | = | -9.27272723 | ||
| 6 | 85640 | 2519 | - | 2552 | = | -33 | * | (50 | / | 330) | = | -4.99999998 | ||
| 7 | 85641 | 2520 | - | 2567 | = | -47 | * | (50 | / | 330) | = | -7.1212121 | ||
| 8 | 85642 | 2564 | - | 2586 | = | -22 | * | (53 | / | 330) | = | -3.53333332 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for River Glen | -34 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -24 | -8 | -6 | -21 | -34 | -93.0 | -18.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 14.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -51.6
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 | 44% | 42% | 42% | 44% | 43% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Jose Unified school district | County of Santa Clara
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.
River Glen math proficiency
Zero+ meets standard.
32% less $meal
31% less $meal
29% less $meal
34% less $meal
33% 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.