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	313992	2369	-	2436	=	-67	*	(128	/	427)	=	-20.08430907
4	313995	2417	-	2485	=	-68	*	(110	/	427)	=	-17.51756439
5	313996	2427	-	2528	=	-101	*	(97	/	427)	=	-22.94379388
6	313999	2464	-	2552	=	-88	*	(92	/	427)	=	-18.96018731
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Molly S. Bakman Elementary											-80

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	9370	2387	-	2436	=	-49	*	(112	/	444)	=	-12.36036035
4	9372	2412	-	2485	=	-73	*	(123	/	444)	=	-20.22297297
5	9373	2433	-	2528	=	-95	*	(111	/	444)	=	-23.75
6	9376	2463	-	2552	=	-89	*	(98	/	444)	=	-19.64414408
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Molly S. Bakman Elementary											-76

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	9691	2375	-	2436	=	-61	*	(117	/	448)	=	-15.93080355
4	9694	2417	-	2485	=	-68	*	(98	/	448)	=	-14.875
5	9695	2409	-	2528	=	-119	*	(125	/	448)	=	-33.20312498
6	9698	2469	-	2552	=	-83	*	(108	/	448)	=	-20.00892852
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Molly S. Bakman Elementary											-84

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	9700	2386	-	2436	=	-50	*	(104	/	450)	=	-11.55555555
4	9701	2424	-	2485	=	-61	*	(119	/	450)	=	-16.13111108
5	9704	2442	-	2528	=	-86	*	(99	/	450)	=	-18.92
6	9705	2458	-	2552	=	-94	*	(128	/	450)	=	-26.73777774
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Molly S. Bakman Elementary											-73

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	9790	2405	-	2436	=	-31	*	(107	/	418)	=	-7.93540669
4	9791	2433	-	2485	=	-52	*	(98	/	418)	=	-12.19138752
5	9792	2433	-	2528	=	-95	*	(116	/	418)	=	-26.3636363
6	9793	2482	-	2552	=	-70	*	(97	/	418)	=	-16.24401912
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Molly S. Bakman Elementary											-63

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-80	-76	-84	-73	-63	-376.0	-75.2

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -54.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -96.2

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	90%	90%	92%	94%	93%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file