Travis Ranch (Data source)
Source data for Travis Ranch
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 | 1530842 | 2487 | - | 2436 | = | 51 | * | (82 | / | 929) | = | 4.5016146 | ||
| 4 | 1530845 | 2514 | - | 2485 | = | 29 | * | (131 | / | 929) | = | 4.08934336 | ||
| 5 | 1530846 | 2552 | - | 2528 | = | 24 | * | (103 | / | 929) | = | 2.66092572 | ||
| 6 | 1530849 | 2562 | - | 2552 | = | 10 | * | (172 | / | 929) | = | 1.85145317 | ||
| 7 | 1530850 | 2591 | - | 2567 | = | 24 | * | (233 | / | 929) | = | 6.01937566 | ||
| 8 | 1530853 | 2593 | - | 2586 | = | 7 | * | (208 | / | 929) | = | 1.56727664 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Travis Ranch | 21 | ||||||||||||
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 | 47928 | 2490 | - | 2436 | = | 54 | * | (101 | / | 956) | = | 5.70502089 | ||
| 4 | 47930 | 2519 | - | 2485 | = | 34 | * | (85 | / | 956) | = | 3.02301252 | ||
| 5 | 47932 | 2543 | - | 2528 | = | 15 | * | (143 | / | 956) | = | 2.24372384 | ||
| 6 | 47935 | 2577 | - | 2552 | = | 25 | * | (214 | / | 956) | = | 5.5962343 | ||
| 7 | 47937 | 2580 | - | 2567 | = | 13 | * | (171 | / | 956) | = | 2.3253138 | ||
| 8 | 47939 | 2598 | - | 2586 | = | 12 | * | (242 | / | 956) | = | 3.0376569 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Travis Ranch | 22 | ||||||||||||
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 | 49236 | 2511 | - | 2436 | = | 75 | * | (119 | / | 958) | = | 9.31628385 | ||
| 4 | 49239 | 2522 | - | 2485 | = | 37 | * | (100 | / | 958) | = | 3.86221292 | ||
| 5 | 49241 | 2578 | - | 2528 | = | 50 | * | (98 | / | 958) | = | 5.1148225 | ||
| 6 | 49243 | 2565 | - | 2552 | = | 13 | * | (240 | / | 958) | = | 3.25678496 | ||
| 7 | 49244 | 2584 | - | 2567 | = | 17 | * | (226 | / | 958) | = | 4.0104384 | ||
| 8 | 49246 | 2618 | - | 2586 | = | 32 | * | (175 | / | 958) | = | 5.84551146 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Travis Ranch | 31 | ||||||||||||
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 | 49251 | 2499 | - | 2436 | = | 63 | * | (94 | / | 988) | = | 5.9939271 | ||
| 4 | 49252 | 2531 | - | 2485 | = | 46 | * | (123 | / | 988) | = | 5.72672064 | ||
| 5 | 49255 | 2554 | - | 2528 | = | 26 | * | (107 | / | 988) | = | 2.81578947 | ||
| 6 | 49256 | 2587 | - | 2552 | = | 35 | * | (192 | / | 988) | = | 6.80161941 | ||
| 7 | 49258 | 2576 | - | 2567 | = | 9 | * | (248 | / | 988) | = | 2.25910931 | ||
| 8 | 49260 | 2632 | - | 2586 | = | 46 | * | (224 | / | 988) | = | 10.42914976 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Travis Ranch | 34 | ||||||||||||
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 | 49452 | 2487 | - | 2436 | = | 51 | * | (122 | / | 1000) | = | 6.222 | ||
| 4 | 49453 | 2533 | - | 2485 | = | 48 | * | (101 | / | 1000) | = | 4.848 | ||
| 5 | 49454 | 2563 | - | 2528 | = | 35 | * | (127 | / | 1000) | = | 4.445 | ||
| 6 | 49455 | 2572 | - | 2552 | = | 20 | * | (192 | / | 1000) | = | 3.84 | ||
| 7 | 49456 | 2592 | - | 2567 | = | 25 | * | (206 | / | 1000) | = | 5.15 | ||
| 8 | 49457 | 2601 | - | 2586 | = | 15 | * | (252 | / | 1000) | = | 3.78 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Travis Ranch | 28 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 21 | 22 | 31 | 34 | 28 | 136.0 | 27.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 42.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 12.2
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 | 10% | 9% | 10% | 14% | 15% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Placentia-Yorba Linda Unified school district | County of Orange
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.
Travis Ranch math proficiency
Zero+ meets standard.
7% less $meal
7% less $meal
8% less $meal
12% less $meal
13% 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.