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	322538	2391	-	2436	=	-45	*	(115	/	449)	=	-11.52561245
4	322539	2411	-	2485	=	-74	*	(115	/	449)	=	-18.95322935
5	322542	2460	-	2528	=	-68	*	(103	/	449)	=	-15.59910908
6	322543	2456	-	2552	=	-96	*	(116	/	449)	=	-24.80178173
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Centennial Elementary											-71

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	9624	2393	-	2436	=	-43	*	(97	/	431)	=	-9.67749417
4	9625	2413	-	2485	=	-72	*	(121	/	431)	=	-20.21345705
5	9628	2459	-	2528	=	-69	*	(116	/	431)	=	-18.57076564
6	9630	2466	-	2552	=	-86	*	(97	/	431)	=	-19.35498834
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Centennial Elementary											-68

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	9951	2389	-	2436	=	-47	*	(117	/	439)	=	-12.52619588
4	9953	2423	-	2485	=	-62	*	(94	/	439)	=	-13.27562637
5	9955	2449	-	2528	=	-79	*	(111	/	439)	=	-19.97494302
6	9958	2449	-	2552	=	-103	*	(117	/	439)	=	-27.45102502
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Centennial Elementary											-73

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	9970	2394	-	2436	=	-42	*	(98	/	416)	=	-9.89423077
4	9972	2456	-	2485	=	-29	*	(119	/	416)	=	-8.29567307
5	9974	2459	-	2528	=	-69	*	(92	/	416)	=	-15.25961537
6	9976	2443	-	2552	=	-109	*	(107	/	416)	=	-28.03605764
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Centennial Elementary											-61

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	10050	2400	-	2436	=	-36	*	(116	/	405)	=	-10.31111111
4	10051	2467	-	2485	=	-18	*	(90	/	405)	=	-4.0
5	10052	2476	-	2528	=	-52	*	(116	/	405)	=	-14.89382716
6	10053	2441	-	2552	=	-111	*	(83	/	405)	=	-22.74814808
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Centennial Elementary											-52

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-71	-68	-73	-61	-52	-325.0	-65.0

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -41.0

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -89.0

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	92%	94%	95%	95%	95%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file