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	2147418	0	-	2436	=		*	(4	/	63)	=
4	2147421	0	-	2485	=		*	(9	/	63)	=
5	2147422	0	-	2528	=		*	(8	/	63)	=
6	2147425	2469	-	2552	=	-83	*	(15	/	63)	=	-19.76190475
7	2147426	0	-	2567	=		*	(10	/	63)	=
8	2147429	0	-	2586	=		*	(9	/	63)	=
11	2147430	0	-	2628	=		*	(8	/	63)	=
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for MethodSchools											-20

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	65903	0	-	2436	=		*	(1	/	65)	=
4	65904	0	-	2485	=		*	(6	/	65)	=
5	65907	0	-	2528	=		*	(9	/	65)	=
6	65909	2480	-	2552	=	-72	*	(11	/	65)	=	-12.18461537
7	65911	2503	-	2567	=	-64	*	(16	/	65)	=	-15.75384614
8	65913	0	-	2586	=		*	(10	/	65)	=
11	65915	2530	-	2628	=	-98	*	(12	/	65)	=	-18.09230763
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for MethodSchools											-46

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	67724	0	-	2436	=		*	(0	/	56)	=
4	67727	0	-	2485	=		*	(0	/	56)	=
5	67728	0	-	2528	=		*	(0	/	56)	=
6	67730	0	-	2552	=		*	(0	/	56)	=
7	67732	0	-	2567	=		*	(0	/	56)	=
8	67735	2494	-	2586	=	-92	*	(13	/	56)	=	-21.35714284
11	67737	0	-	2628	=		*	(0	/	56)	=
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for MethodSchools											-21

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	67832	0	-	2436	=		*	(0	/	80)	=
4	67835	2399	-	2485	=	-86	*	(12	/	80)	=	-12.9
5	67836	2460	-	2528	=	-68	*	(11	/	80)	=	-9.35
6	67839	2465	-	2552	=	-87	*	(17	/	80)	=	-18.4875
7	67840	0	-	2567	=		*	(0	/	80)	=
8	67843	2467	-	2586	=	-119	*	(16	/	80)	=	-23.8
11	67844	2519	-	2628	=	-109	*	(11	/	80)	=	-14.9875
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for MethodSchools											-80

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	68333	0	-	2436	=		*	(10	/	88)	=
4	68334	0	-	2485	=		*	(4	/	88)	=
5	68335	0	-	2528	=		*	(10	/	88)	=
6	68336	2491	-	2552	=	-61	*	(12	/	88)	=	-8.3181818
7	68337	2517	-	2567	=	-50	*	(20	/	88)	=	-11.36363635
8	68338	2513	-	2586	=	-73	*	(17	/	88)	=	-14.10227271
11	68339	2506	-	2628	=	-122	*	(15	/	88)	=	-20.79545449
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for MethodSchools											-55

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-20	-46	-21	-80	-55	-222.0	-44.4

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	2017	2018	2019
Percent	26%	46%	31%	74%	39%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file