Table 1.

Descriptive statistics, ICC(1), ICC(2), and standardized school-level factor loadings and the associated standard errors for items measuring collective teacher efficacy, school support, and organizational commitment.

Item	Mean	SD	ICC(1)	ICC(2)	Factor loading
Collective teacher efficacy (Scale score composite reliability $\omega$ = 0.982)
1. How much can teachers in your school do to produce meaningful student learning?	3.636	0.593	0.111	0.812	0.975 (0.029)
2. How much can teachers in your school do to help students master complex content?	3.457	0.622	0.118	0.821	0.999 (0.025)
3. To what extent can school personnel in your school establish rules and procedures that facilitate learning?	3.522	0.638	0.090	0.775	0.997 (0.040)
4. How well can adults in your school get students to follow school rules?	3.603	0.717	0.192	0.892	0.845 (0.078)
5. How much can teachers in your school do to help students think critically?	3.289	0.686	0.126	0.833	0.998 (0.020)
6. How much can teachers in your school do to promote deep understanding of academic concepts?	3.450	0.685	0.105	0.803	0.963 (0.026)
7. How much can school personnel in your school do to control disruptive behavior?	3.570	0.737	0.132	0.841	0.915 (0.052)
8. To what extent can teachers in your school make expectations clear about appropriate student behavior?	3.676	0.615	0.117	0.819	0.999 (0.027)
9. How much can your school do to foster student creativity?	3.359	0.717	0.113	0.816	0.763 (0.155)
10. How much can your school do to get students to believe they can do well in schoolwork?	3.308	0.717	0.153	0.862	0.967 (0.029)
11. How well can teachers in your school respond to defiant students?	3.536	0.775	0.182	0.885	0.727 (0.135)
12. How much can your school do to help students feel safe while they are at school?	3.884	0.674	0.100	0.795	0.958 (0.032)
School support (Scale score composite reliability $\omega$ = 0.959)
1. The principal consults staff before making decisions affecting them.	2.820	0.642	0.138	0.847	0.946 (0.053)
2. There is a formal support system at this school for beginning teachers.	2.794	0.615	0.168	0.874	0.853 (0.091)
3. Administrators facilitate teacher working together.	2.906	0.521	0.114	0.818	0.880 (0.075)
4. The principal ensures that teachers have the necessary materials to support high quality instruction.	2.882	0.500	0.119	0.825	0.868 (0.098)
5. Teachers are aware of what the principal believes regarding teaching and learning.	2.936	0.527	0.116	0.819	0.884 (0.056)
6. Administrators know the problems faced by staff.	2.704	0.634	0.077	0.743	0.933 (0.067)
Organizational commitment (Scale score composite reliability $\omega$ = 0.963)
1. There is a great deal of cooperative effort among staff members.	4.720	0.788	0.102	0.798	0.904 (0.058)
2. There is broad agreement among the entire school faculty about the central mission of the school.	4.184	0.894	0.094	0.781	0.976 (0.043)
3. This school seems like a big family; everyone is so close and cordial.	4.187	1.028	0.121	0.826	0.954 (0.041)