A Discussion of Standardized Tests

For persons who are interested in understanding standardized tests more fully the following web pages published in LD OnLine www.ldonline.com provide excellent information to help clarify the interpretation of standard scores used in SCAN-3:C and SCAN-3:A and all other standardized tests such as language and cognitive measures.

graph 4

Standard Score	Subtest Score	% Rank	Standard Score	Subtest Score	% Rank	Standard Score	Subtest Score	% Rank	Standard Score	Subtest Score	% Rank
145	19	>99	107	--	68	97	--	42	87	--	19
140	18	>99	106	--	66	96	--	39	86	--	18
135	17	99	105	11	63	95	9	37	85	7	16
130	16	98	104	--	61	94	--	34	80	6	9
125	15	95	103	--	58	93	--	32	75	5	5
120	14	91	102	--	55	92	--	30	70	4	2
115	13	84	101	--	53	91	--	27	65	3	1
110	12	75	100	10--	50	90	8	25	60	2	<1
109	--	73	99	--	47	89	--	23	55	1	>1
108	--	70	98	--	45	88	--	21

Click on this link for a discussion on:
Understanding Tests and Measurements for the Parent and Advocate

http://www.ldonline.org/article/6026