Validity and Reliability of Measurement Analysis, Time 1 to Time 3

	Items, no.	Cases, no.	Point Bi-serial Correlation		Mean	SD	SEM	Cronbach's α
			Min	Max
Fall Pre-study Score (Time 1)
Total Development	50	274	0.26	0.77	51.57	17.43	1.05	0.97
Social/Emotional Development	13	340	0.57	0.71	12.85	5.01	0.27	0.92
Physical Development	8	345	0.43	0.62	9.45	2.79	0.15	0.80
Cognitive Development	16	336	0.52	0.78	14.78	6.59	0.36	0.93
Language Development	13	340	0.47	0.77	12.87	5.73	0.31	0.92
Sense of Self	4	353	0.63	0.66	3.86	1.88	0.10	0.82
Responsibility for Self and Others	5	366	0.52	0.72	4.95	2.12	0.11	0.85
Prosocial Behavior	4	361	0.58	0.69	3.79	1.72	0.09	0.82
Gross Motor	5	351	0.51	0.66	5.92	1.87	0.10	0.79
Fine Motor	3	365	0.46	0.64	3.52	1.41	0.07	0.71
Learning and Problem Solving	5	365	0.63	0.77	4.26	2.25	0.12	0.87
Logical Thinking	8	342	0.56	0.71	7.27	3.76	0.20	0.88
Representation and Symbolic Thinking	3	367	0.63	0.70	2.93	1.35	0.07	0.81
Listening and Speaking	6	355	0.47	0.81	6.87	3.03	0.16	0.88
Reading and Writing	7	353	0.46	0.72	5.80	3.12	0.17	0.85
Winter pre-study score (time 2)
Total Development	50	326	0.47	0.78	91.54	23.33	1.29	0.98
Social/Emotional Development	13	356	0.65	0.78	23.90	6.74	0.36	0.94
Physical Development	8	354	0.42	0.68	16.39	3.32	0.18	0.86
Cognitive Development	16	352	0.57	0.77	27.93	8.27	0.44	0.95
Language Development	13	356	0.51	0.82	22.85	7.17	0.38	0.94
Sense of Self	4	362	0.71	0.76	7.54	2.36	0.12	0.87
Responsibility for Self and Others	5	363	0.63	0.81	9.07	2.80	0.15	0.90
Prosocial Behavior	4	363	0.62	0.72	7.25	2.23	0.12	0.84
Gross Motor	5	359	0.62	0.73	10.00	2.22	0.12	0.87
Fine Motor	3	360	0.52	0.70	6.34	1.61	0.08	0.77
Learning and Problem Solving	5	362	0.72	0.79	8.33	2.79	0.15	0.90
Logical Thinking	8	359	0.55	0.78	13.94	4.60	0.24	0.92
Representation and Symbolic Thinking	3	362	0.65	0.77	5.68	1.72	0.09	0.84
Listening and Speaking	6	357	0.57	0.83	11.39	3.67	0.19	0.91
Reading and Writing	7	364	0.55	0.79	11.45	3.97	0.21	0.90
spring post-study score (time 3)
Total Development	50	341	0.45	0.81	124.44	22.20	1.20	0.98
Social/Emotional Development	13	362	0.58	0.78	32.57	6.44	0.34	0.94
Physical Development	8	367	0.38	0.74	21.60	2.80	0.15	0.86
Cognitive Development	16	364	0.53	0.81	38.80	7.99	0.42	0.95
Language Development	13	368	0.62	0.81	31.52	6.91	0.36	0.95
Sense of Self	4	365	0.61	0.76	10.20	2.02	0.11	0.84
Responsibility for Self and Others	5	372	0.65	0.82	12.46	2.84	0.15	0.91
Prosocial Behavior	4	374	0.59	0.76	9.85	2.17	0.11	0.86
Gross Motor	5	370	0.57	0.74	13.68	1.83	0.10	0.85
Fine Motor	3	372	0.59	0.78	7.95	1.40	0.07	0.83
Learning and Problem Solving	5	373	0.73	0.79	11.58	2.86	0.15	0.91
Logical Thinking	8	367	0.52	0.81	19.39	4.34	0.23	0.93
Representation and Symbolic Thinking	3	374	0.71	0.81	7.87	1.55	0.08	0.87
Listening and Speaking	6	371	0.62	0.83	15.01	3.19	0.17	0.90
Reading and Writing	7	371	0.64	0.83	16.53	4.05	0.21	0.92

Abbreviations: Min, minimum; max, maximum; SD, standard deviation; SEM, standard error of measurement.