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	100782	2351	-	2436	=	-85	*	(40	/	291)	=	-11.68384874
4	100783	2419	-	2485	=	-66	*	(44	/	291)	=	-9.97938143
5	100786	2474	-	2528	=	-54	*	(40	/	291)	=	-7.42268038
6	100787	2434	-	2552	=	-118	*	(53	/	291)	=	-21.49140891
7	100790	2454	-	2567	=	-113	*	(62	/	291)	=	-24.07560135
8	100792	2442	-	2586	=	-144	*	(52	/	291)	=	-25.73195875
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Melrose Leadership Academy											-100

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	2867	2371	-	2436	=	-65	*	(48	/	299)	=	-10.43478261
4	2870	2456	-	2485	=	-29	*	(42	/	299)	=	-4.07357858
5	2872	2426	-	2528	=	-102	*	(45	/	299)	=	-15.35117054
6	2873	2453	-	2552	=	-99	*	(57	/	299)	=	-18.87290965
7	2875	2430	-	2567	=	-137	*	(53	/	299)	=	-24.28428093
8	2877	2452	-	2586	=	-134	*	(54	/	299)	=	-24.2006688
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Melrose Leadership Academy											-97

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	2941	2363	-	2436	=	-73	*	(43	/	292)	=	-10.74999993
4	2944	2437	-	2485	=	-48	*	(48	/	292)	=	-7.89041093
5	2946	2468	-	2528	=	-60	*	(45	/	292)	=	-9.24657534
6	2947	2451	-	2552	=	-101	*	(51	/	292)	=	-17.64041093
7	2950	2461	-	2567	=	-106	*	(52	/	292)	=	-18.87671225
8	2951	2439	-	2586	=	-147	*	(53	/	292)	=	-26.6815068
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Melrose Leadership Academy											-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	2943	2407	-	2436	=	-29	*	(48	/	276)	=	-5.04347825
4	2945	2455	-	2485	=	-30	*	(42	/	276)	=	-4.56521739
5	2947	2441	-	2528	=	-87	*	(46	/	276)	=	-14.49999994
6	2949	2457	-	2552	=	-95	*	(43	/	276)	=	-14.8007246
7	2951	2504	-	2567	=	-63	*	(50	/	276)	=	-11.41304346
8	2953	2480	-	2586	=	-106	*	(47	/	276)	=	-18.05072463
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Melrose Leadership Academy											-68

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	2970	2410	-	2436	=	-26	*	(66	/	312)	=	-5.49999999
4	2971	2471	-	2485	=	-14	*	(45	/	312)	=	-2.01923077
5	2972	2490	-	2528	=	-38	*	(41	/	312)	=	-4.99358973
6	2973	2428	-	2552	=	-124	*	(52	/	312)	=	-20.66666658
7	2974	2468	-	2567	=	-99	*	(51	/	312)	=	-16.18269226
8	2975	2478	-	2586	=	-108	*	(57	/	312)	=	-19.73076916
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Melrose Leadership Academy											-69

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-100	-97	-91	-68	-69	-425.0	-85.0

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -40.0

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -130.0

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	67%	60%	53%	50%	43%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file