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	1993478	2411	-	2436	=	-25	*	(130	/	392)	=	-8.29081633
4	1993479	2466	-	2485	=	-19	*	(137	/	392)	=	-6.64030611
5	1993482	2487	-	2528	=	-41	*	(125	/	392)	=	-13.07397959
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Sierra Lakes Elementary											-28

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	61310	2411	-	2436	=	-25	*	(115	/	372)	=	-7.7284946
4	61313	2481	-	2485	=	-4	*	(120	/	372)	=	-1.29032258
5	61315	2485	-	2528	=	-43	*	(137	/	372)	=	-15.83602147
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Sierra Lakes Elementary											-25

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	63089	2407	-	2436	=	-29	*	(118	/	364)	=	-9.4010989
4	63091	2457	-	2485	=	-28	*	(127	/	364)	=	-9.76923074
5	63092	2505	-	2528	=	-23	*	(119	/	364)	=	-7.51923075
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Sierra Lakes Elementary											-27

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	63170	2413	-	2436	=	-23	*	(101	/	351)	=	-6.6182336
4	63172	2440	-	2485	=	-45	*	(121	/	351)	=	-15.51282048
5	63174	2474	-	2528	=	-54	*	(129	/	351)	=	-19.84615382
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Sierra Lakes Elementary											-42

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	63441	2408	-	2436	=	-28	*	(111	/	335)	=	-9.27761192
4	63442	2469	-	2485	=	-16	*	(102	/	335)	=	-4.87164178
5	63443	2468	-	2528	=	-60	*	(122	/	335)	=	-21.85074624
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Sierra Lakes Elementary											-36

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-28	-25	-27	-42	-36	-158.0	-31.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -10.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -52.6

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	53%	62%	57%	56%	56%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file