In their review of twelve years of collective teacher efficacy
research, Klassen et al. (2011) characterize the field of collective
teacher efficacy research as not yet reaching ‘‘maturity’’ and the
measurement of this construct as an area of underdevelopment. In
contrast to other available instruments, the Collective Teacher
Belief Scale (CTBS) was characterized as the strongest reported in
the literature and was hesitantly praised for a ‘‘closer congruence
to collective efficacy theory’’ (Klassen et al., 2011). The CTBS survey
contains two subscales: instructional strategies and classroom
management/student discipline (Tschannen-Moran & Barr, 2004).
This survey was found to have a two-factor structure that matched
the survey scales, and high reliability for the whole survey and
both sub-scales (0.94–0.97) (Tschannen-Moran & Barr, 2004). In
addition, the CTBS Survey’s sub-scale structure and construct
definitions is consistent with the PMSP construct definition and complimentary to the teacher self-efficacy construct. Therefore,
the partnership has selected the CTBS Survey and made a similar
modification as the one made to the TSES to create a STEM subjectspecific
instrument for the STEM Common Measurement System.