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	2256750	2397	-	2436	=	-39	*	(51	/	278)	=	-7.15467624
4	2256751	2430	-	2485	=	-55	*	(59	/	278)	=	-11.67266183
5	2256754	2449	-	2528	=	-79	*	(30	/	278)	=	-8.52517985
6	2256755	2475	-	2552	=	-77	*	(49	/	278)	=	-13.57194238
7	2256758	2470	-	2567	=	-97	*	(40	/	278)	=	-13.95683452
8	2256759	2438	-	2586	=	-148	*	(49	/	278)	=	-26.08633082
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Perkins K-8											-81

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	69250	2367	-	2436	=	-69	*	(48	/	247)	=	-13.40890683
4	69251	2443	-	2485	=	-42	*	(49	/	247)	=	-8.33198377
5	69253	2443	-	2528	=	-85	*	(56	/	247)	=	-19.271255
6	69255	2495	-	2552	=	-57	*	(28	/	247)	=	-6.46153841
7	69257	2494	-	2567	=	-73	*	(31	/	247)	=	-9.16194326
8	69260	2483	-	2586	=	-103	*	(35	/	247)	=	-14.59514161
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Perkins K-8											-71

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	71082	2343	-	2436	=	-93	*	(49	/	263)	=	-17.32699619
4	71085	2428	-	2485	=	-57	*	(46	/	263)	=	-9.96958169
5	71087	2464	-	2528	=	-64	*	(38	/	263)	=	-9.24714829
6	71088	2477	-	2552	=	-75	*	(56	/	263)	=	-15.9695817
7	71091	2481	-	2567	=	-86	*	(28	/	263)	=	-9.15589351
8	71093	2417	-	2586	=	-169	*	(46	/	263)	=	-29.5589352
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Perkins K-8											-91

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	71228	2361	-	2436	=	-75	*	(54	/	271)	=	-14.9446494
4	71230	2418	-	2485	=	-67	*	(46	/	271)	=	-11.3726937
5	71232	2447	-	2528	=	-81	*	(44	/	271)	=	-13.15129146
6	71234	2468	-	2552	=	-84	*	(42	/	271)	=	-13.01845012
7	71236	2459	-	2567	=	-108	*	(55	/	271)	=	-21.91881913
8	71238	2442	-	2586	=	-144	*	(30	/	271)	=	-15.94095941
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Perkins K-8											-90

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	71718	2390	-	2436	=	-46	*	(45	/	296)	=	-6.99324324
4	71719	2437	-	2485	=	-48	*	(53	/	296)	=	-8.59459459
5	71720	2418	-	2528	=	-110	*	(51	/	296)	=	-18.95270267
6	71721	2459	-	2552	=	-93	*	(54	/	296)	=	-16.96621618
7	71722	2445	-	2567	=	-122	*	(41	/	296)	=	-16.89864859
8	71723	2467	-	2586	=	-119	*	(52	/	296)	=	-20.90540533
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Perkins K-8											-89

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-81	-71	-91	-90	-89	-422.0	-84.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -60.4

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -108.4

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	97%	95%	94%	95%	97%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file