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	1276917	0	-	2436	=		*	(10	/	84)	=
4	1276920	2407	-	2485	=	-78	*	(13	/	84)	=	-12.07142851
5	1276921	2473	-	2528	=	-55	*	(13	/	84)	=	-8.51190472
6	1276924	2442	-	2552	=	-110	*	(14	/	84)	=	-18.33333326
7	1276925	2588	-	2567	=	21	*	(14	/	84)	=	3.49999999
8	1276928	2480	-	2586	=	-106	*	(12	/	84)	=	-15.14285705
11	1276929	0	-	2628	=		*	(8	/	84)	=
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Three Rivers Charter											-51

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	39894	2400	-	2436	=	-36	*	(12	/	78)	=	-5.53846151
4	39896	0	-	2485	=		*	(8	/	78)	=
5	39899	2455	-	2528	=	-73	*	(14	/	78)	=	-13.10256407
6	39900	0	-	2552	=		*	(10	/	78)	=
7	39903	2475	-	2567	=	-92	*	(13	/	78)	=	-15.33333327
8	39904	2593	-	2586	=	7	*	(16	/	78)	=	1.43589744
11	39907	0	-	2628	=		*	(5	/	78)	=
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Three Rivers Charter											-33

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	40917	0	-	2436	=		*	(0	/	75)	=
4	40920	0	-	2485	=		*	(0	/	75)	=
5	40921	2444	-	2528	=	-84	*	(12	/	75)	=	-13.44
6	40924	2487	-	2552	=	-65	*	(16	/	75)	=	-13.86666665
7	40926	2529	-	2567	=	-38	*	(12	/	75)	=	-6.08
8	40928	2446	-	2586	=	-140	*	(16	/	75)	=	-29.86666662
11	40930	0	-	2628	=		*	(0	/	75)	=
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Three Rivers Charter											-63

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	40935	0	-	2436	=		*	(0	/	78)	=
4	40936	0	-	2485	=		*	(0	/	78)	=
5	40939	2495	-	2528	=	-33	*	(12	/	78)	=	-5.07692305
6	40940	2529	-	2552	=	-23	*	(13	/	78)	=	-3.83333332
7	40943	2546	-	2567	=	-21	*	(18	/	78)	=	-4.84615383
8	40944	2508	-	2586	=	-78	*	(11	/	78)	=	-11.0
11	40947	0	-	2628	=		*	(0	/	78)	=
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Three Rivers Charter											-25

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	41088	2416	-	2436	=	-20	*	(15	/	83)	=	-3.61445782
4	41089	2450	-	2485	=	-35	*	(11	/	83)	=	-4.6385542
5	41090	2486	-	2528	=	-42	*	(11	/	83)	=	-5.56626504
6	41091	2554	-	2552	=	2	*	(15	/	83)	=	0.36144578
7	41092	2537	-	2567	=	-30	*	(13	/	83)	=	-4.69879518
8	41093	2599	-	2586	=	13	*	(17	/	83)	=	2.6626506
11	41094	0	-	2628	=		*	(0	/	83)	=
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Three Rivers Charter											-15

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-51	-33	-63	-25	-15	-187.0	-37.4

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	51%	68%	61%	71%	73%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file