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	326337	2350	-	2436	=	-86	*	(84	/	294)	=	-24.57142851
4	326340	2404	-	2485	=	-81	*	(78	/	294)	=	-21.48979588
5	326341	2395	-	2528	=	-133	*	(66	/	294)	=	-29.85714274
6	326344	2391	-	2552	=	-161	*	(66	/	294)	=	-36.142857
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Homan Elementary											-112

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	9733	2376	-	2436	=	-60	*	(83	/	291)	=	-17.11340202
4	9735	2398	-	2485	=	-87	*	(88	/	291)	=	-26.30927833
5	9738	2410	-	2528	=	-118	*	(69	/	291)	=	-27.97938144
6	9740	2429	-	2552	=	-123	*	(51	/	291)	=	-21.55670091
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Homan Elementary											-93

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	10062	2370	-	2436	=	-66	*	(71	/	292)	=	-16.04794514
4	10064	2405	-	2485	=	-80	*	(84	/	292)	=	-23.01369856
5	10066	2458	-	2528	=	-70	*	(88	/	292)	=	-21.09589041
6	10067	2475	-	2552	=	-77	*	(49	/	292)	=	-12.92123286
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Homan 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	10080	2400	-	2436	=	-36	*	(80	/	315)	=	-9.14285711
4	10082	2422	-	2485	=	-63	*	(75	/	315)	=	-14.99999999
5	10084	2462	-	2528	=	-66	*	(79	/	315)	=	-16.5523809
6	10086	2467	-	2552	=	-85	*	(81	/	315)	=	-21.85714285
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Homan Elementary											-63

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	10160	2396	-	2436	=	-40	*	(102	/	333)	=	-12.25225224
4	10161	2439	-	2485	=	-46	*	(81	/	333)	=	-11.18918918
5	10162	2453	-	2528	=	-75	*	(76	/	333)	=	-17.1171171
6	10163	2507	-	2552	=	-45	*	(74	/	333)	=	-9.99999999
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Homan Elementary											-51

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-112	-93	-73	-63	-51	-392.0	-78.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -6.4

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -150.4

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	94%	94%	91%	98%	96%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file