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	233723	2389	-	2436	=	-47	*	(53	/	225)	=	-11.07111109
4	233724	2455	-	2485	=	-30	*	(58	/	225)	=	-7.73333331
5	233727	2473	-	2528	=	-55	*	(54	/	225)	=	-13.2
6	233728	2507	-	2552	=	-45	*	(60	/	225)	=	-11.99999997
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Ellerhorst Elementary											-44

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	6853	2423	-	2436	=	-13	*	(53	/	217)	=	-3.1751152
4	6855	2453	-	2485	=	-32	*	(56	/	217)	=	-8.25806451
5	6858	2484	-	2528	=	-44	*	(57	/	217)	=	-11.55760368
6	6860	2502	-	2552	=	-50	*	(51	/	217)	=	-11.75115205
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Ellerhorst Elementary											-35

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	7066	2405	-	2436	=	-31	*	(48	/	211)	=	-7.05213268
4	7067	2426	-	2485	=	-59	*	(56	/	211)	=	-15.65876774
5	7070	2464	-	2528	=	-64	*	(52	/	211)	=	-15.77251181
6	7072	2496	-	2552	=	-56	*	(55	/	211)	=	-14.59715639
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Ellerhorst Elementary											-53

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	7084	2411	-	2436	=	-25	*	(51	/	202)	=	-6.31188118
4	7086	2436	-	2485	=	-49	*	(45	/	202)	=	-10.91584157
5	7088	2461	-	2528	=	-67	*	(58	/	202)	=	-19.2376237
6	7090	2495	-	2552	=	-57	*	(48	/	202)	=	-13.54455443
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Ellerhorst Elementary											-50

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	7130	2405	-	2436	=	-31	*	(58	/	207)	=	-8.68599032
4	7131	2432	-	2485	=	-53	*	(50	/	207)	=	-12.80193233
5	7132	2460	-	2528	=	-68	*	(44	/	207)	=	-14.45410625
6	7133	2488	-	2552	=	-64	*	(55	/	207)	=	-17.00483091
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Ellerhorst Elementary											-53

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-44	-35	-53	-50	-53	-235.0	-47.0

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -26.0

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -68.0

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	39%	38%	41%	43%	43%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file