Rancho Cucamonga High (Data source)
Source data for Rancho Cucamonga High
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 |
||
11 | 1952632 | 2615 | - | 2628 | = | -13 | * | (870 | / | 870) | = | -13.0 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rancho Cucamonga High | -13 |
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 |
||
11 | 60149 | 2631 | - | 2628 | = | 3 | * | (781 | / | 781) | = | 3.0 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rancho Cucamonga High | 3 |
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 |
||
11 | 61893 | 2617 | - | 2628 | = | -11 | * | (783 | / | 783) | = | -11.0 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rancho Cucamonga High | -11 |
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 |
||
11 | 61982 | 2619 | - | 2628 | = | -9 | * | (727 | / | 727) | = | -9.0 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rancho Cucamonga High | -9 |
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 |
||
11 | 62243 | 2632 | - | 2628 | = | 4 | * | (804 | / | 804) | = | 4.0 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rancho Cucamonga High | 4 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-13 | 3 | -11 | -9 | 4 | -26.0 | -5.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 18.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -29.2
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 | 34% | 43% | 41% | 42% | 41% |
Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Chaffey Joint Union High school district County of San Bernardino
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.
Rancho Cucamonga High math proficiency
Zero+ meets standard.

25% less $meal

32% less $meal

29% less $meal

33% less $meal

32% 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.
High Schools (Public) schools in Chaffey Joint Union High (8)
Alta Loma High | Chaffey High | Colony High |
Etiwanda High | Los Osos High | Montclair High |
Ontario High | Rancho Cucamonga High |