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	2115336	2448	-	2436	=	12	*	(	/	)	=
4	2115339	2479	-	2485	=	-6	*	(	/	)	=
5	2115340	2524	-	2528	=	-4	*	(	/	)	=
6	2115343	2544	-	2552	=	-8	*	(	/	)	=
7	2115344	2557	-	2567	=	-10	*	(	/	)	=
8	2115347	0	-	2586	=		*	(	/	)	=
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Oxford Preparatory Academy - San Diego County

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	64987	0	-	2485	=		*	(	/	)	=
6	64988	0	-	2552	=		*	(	/	)	=
8	64990	0	-	2586	=		*	(	/	)	=
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Oxford Preparatory Academy - San Diego County

Last steps

Compute the average

2015	2016	Sum	Average
		0.0	0.0

Compute the Upper Control Limit

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

Compute the Lower Control Limit

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

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
Percent	22%	25%
Data source	2015 data file	2016 data file