Houston (Data source)
Source data for Houston
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 | 2409171 | 2403 | - | 2436 | = | -33 | * | (12 | / | 141) | = | -2.80851061 | ||
4 | 2409172 | 2443 | - | 2485 | = | -42 | * | (19 | / | 141) | = | -5.65957447 | ||
5 | 2409175 | 2491 | - | 2528 | = | -37 | * | (11 | / | 141) | = | -2.88652481 | ||
6 | 2409176 | 2417 | - | 2552 | = | -135 | * | (16 | / | 141) | = | -15.3191489 | ||
7 | 2409179 | 2453 | - | 2567 | = | -114 | * | (49 | / | 141) | = | -39.61702122 | ||
8 | 2409180 | 2488 | - | 2586 | = | -98 | * | (34 | / | 141) | = | -23.6312056 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Houston | -90 |
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 | 73571 | 2364 | - | 2436 | = | -72 | * | (13 | / | 153) | = | -6.11764704 | ||
4 | 73574 | 2443 | - | 2485 | = | -42 | * | (15 | / | 153) | = | -4.11764703 | ||
5 | 73576 | 2423 | - | 2528 | = | -105 | * | (19 | / | 153) | = | -13.03921563 | ||
6 | 73577 | 2505 | - | 2552 | = | -47 | * | (15 | / | 153) | = | -4.60784311 | ||
7 | 73580 | 2470 | - | 2567 | = | -97 | * | (40 | / | 153) | = | -25.35947708 | ||
8 | 73581 | 2448 | - | 2586 | = | -138 | * | (51 | / | 153) | = | -45.99999995 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Houston | -99 |
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 | 75548 | 2391 | - | 2436 | = | -45 | * | (22 | / | 148) | = | -6.68918916 | ||
4 | 75550 | 2412 | - | 2485 | = | -73 | * | (12 | / | 148) | = | -5.91891891 | ||
5 | 75552 | 2424 | - | 2528 | = | -104 | * | (13 | / | 148) | = | -9.13513505 | ||
6 | 75555 | 2453 | - | 2552 | = | -99 | * | (18 | / | 148) | = | -12.04054048 | ||
7 | 75557 | 2486 | - | 2567 | = | -81 | * | (45 | / | 148) | = | -24.62837837 | ||
8 | 75558 | 2497 | - | 2586 | = | -89 | * | (38 | / | 148) | = | -22.85135128 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Houston | -81 |
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 | 75736 | 2337 | - | 2436 | = | -99 | * | (22 | / | 150) | = | -14.51999993 | ||
4 | 75737 | 2401 | - | 2485 | = | -84 | * | (20 | / | 150) | = | -11.19999997 | ||
5 | 75740 | 2395 | - | 2528 | = | -133 | * | (12 | / | 150) | = | -10.64 | ||
6 | 75741 | 2420 | - | 2552 | = | -132 | * | (15 | / | 150) | = | -13.2 | ||
7 | 75744 | 2482 | - | 2567 | = | -85 | * | (37 | / | 150) | = | -20.96666661 | ||
8 | 75745 | 2528 | - | 2586 | = | -58 | * | (44 | / | 150) | = | -17.01333331 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Houston | -88 |
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 | 76260 | 0 | - | 2436 | = | * | (10 | / | 123) | = | ||||
4 | 76261 | 2386 | - | 2485 | = | -99 | * | (18 | / | 123) | = | -14.48780484 | ||
5 | 76262 | 2391 | - | 2528 | = | -137 | * | (20 | / | 123) | = | -22.27642276 | ||
6 | 76263 | 0 | - | 2552 | = | * | (10 | / | 123) | = | ||||
7 | 76264 | 2455 | - | 2567 | = | -112 | * | (34 | / | 123) | = | -30.95934957 | ||
8 | 76265 | 2512 | - | 2586 | = | -74 | * | (31 | / | 123) | = | -18.65040648 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Houston | -86 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-90 | -99 | -81 | -88 | -86 | -444.0 | -88.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -70.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -106.8
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 | 81% | 79% | 77% | 82% | 82% |
Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lodi Unified school district County of San Joaquin
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Houston math proficiency
Zero+ meets standard.
63% less $meal
69% less $meal
68% less $meal
77% less $meal
78% 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.