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	2242870	2420	-	2436	=	-16	*	(79	/	244)	=	-5.18032786
4	2242873	2457	-	2485	=	-28	*	(79	/	244)	=	-9.06557375
5	2242874	2467	-	2528	=	-61	*	(86	/	244)	=	-21.49999998
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Carson Elementary											-36

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	68848	2455	-	2436	=	19	*	(68	/	221)	=	5.84615383
4	68850	2451	-	2485	=	-34	*	(78	/	221)	=	-11.99999998
5	68851	2493	-	2528	=	-35	*	(75	/	221)	=	-11.87782803
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Carson Elementary											-18

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	70681	2418	-	2436	=	-18	*	(62	/	200)	=	-5.58
4	70682	2468	-	2485	=	-17	*	(60	/	200)	=	-5.1
5	70685	2497	-	2528	=	-31	*	(78	/	200)	=	-12.09
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Carson Elementary											-23

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	70827	2416	-	2436	=	-20	*	(45	/	169)	=	-5.32544378
4	70829	2432	-	2485	=	-53	*	(64	/	169)	=	-20.07100587
5	70831	2496	-	2528	=	-32	*	(60	/	169)	=	-11.36094672
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Carson Elementary											-37

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	71315	2406	-	2436	=	-30	*	(68	/	181)	=	-11.27071821
4	71316	2450	-	2485	=	-35	*	(50	/	181)	=	-9.66850826
5	71317	2457	-	2528	=	-71	*	(63	/	181)	=	-24.71270716
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Carson Elementary											-46

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-36	-18	-23	-37	-46	-160.0	-32.0

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 1.0

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -65.0

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	97%	90%	90%	89%	88%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file