Table 2.

Descriptive Statistics of Outcomes by Intervention Groups

Outcomes	Sample size	Overall mean	P-3	P-2	P-1	P-K	K-3	None or K only
Academic Functioning
Math achievement, grade 3	1,289	100.66	107.58	102.41	99.78	98.27	99.95	97.18
Math achievement, grade 8	1,343	147.32	152.53	151.04	146.47	145.55	143.09	143.95
Reading achievement, grade 3	1,288	97.05	106.33	99.08	95.49	93.50	97.63	92.37
Reading achievement, grade 8	1,344	144.72	151.18	148.38	144.56	143.34	139.31	140.77
Social-emotional Functioning
Classroom adjustment, grade 3	1,326	18.92	20.63	19.46	18.99	18.13	17.99	18.36
Classroom adjustment, grades 4–6	1,224	18.72	19.58	19.49	18.77	18.24	17.98	18.11
Perceived competence, grades 3–4	1,227	28.33	29.04	28.60	28.22	28.11	27.78	28.04
Perceived competence, grades 5–6	1,054	33.65	33.64	34.28	33.39	34.07	33.35	33.10
School Experiences and Expectation
Ever retained, grades 1–8, %	1,377	27.7%	9.2%	22.0%	31.9%	32.8%	28.9%	37.9%
Years in special education, grades 1–8	1,377	0.60	0.34	0.30	0.73	0.67	0.95	0.82
Ever school mobility, grade 4–8, %	1,361	60.6%	39.2%	53.3%	67.0%	65.7%	63.1%	72.8%
Expectations of college attendance, grade 10, %	1,102	84.8%	89.0%	86.0%	85.9%	83.0%	80.0%	84.0%