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
4	1545055	2424	-	2485	=	-61	*	(124	/	257)	=	-29.43190659
5	1545056	2432	-	2528	=	-96	*	(133	/	257)	=	-49.68093379
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Romero-Cruz Academy											-79

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
4	48429	2427	-	2485	=	-58	*	(152	/	275)	=	-32.05818178
5	48431	2448	-	2528	=	-80	*	(123	/	275)	=	-35.78181816
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Romero-Cruz Academy											-68

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
4	49749	2442	-	2485	=	-43	*	(140	/	280)	=	-21.5
5	49751	2460	-	2528	=	-68	*	(140	/	280)	=	-34.0
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Romero-Cruz Academy											-56

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
4	49763	2423	-	2485	=	-62	*	(71	/	174)	=	-25.29885057
5	49764	2466	-	2528	=	-62	*	(103	/	174)	=	-36.70114936
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Romero-Cruz Academy											-62

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
4	49960	2441	-	2485	=	-44	*	(69	/	133)	=	-22.82706765
5	49961	2468	-	2528	=	-60	*	(64	/	133)	=	-28.87218042
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Romero-Cruz Academy											-52

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-79	-68	-56	-62	-52	-317.0	-63.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -33.4

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -93.4

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	96%	98%	98%	91%	86%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file