The major concern of this study is to explain the structural relationship of the factors that
influence effectiveness of consultative supervision. For this purpose, improvement of
instructional competency based on subjects’ perception is considered the effectiveness of
consultative supervision; then, the conceptual model was established that consulting process
variables such as spontaneity, professionalism, and active learning were proposed as
mediating variables between school support variables and the effectiveness of consultative
supervision. Also, consulting type variable was added under the assumption that structural
relationship of factors should be different according to consulting type. On the basis of
theoretical linkages among the constructs and considering characteristics of consultative
supervision in Korea, a conceptual model was established and tested using a Structural
Equation Models(SEM). The subjects were limited to Gyung-Gi province primary and
secondary school teachers who participated in instructional consulting in 2012. In total, 872
teachers in 160 schools are included in this analysis. Confirmatory Factor Analysis(CFA)
results showed all the measurement scales included in the questionnaire were found to be
reliable and appropriate. After the questionnaire has been rendered reliable and valid, the
collected data was statistically analyzed using SEM and multiple group SEM. The major
findings from the analysis are listed as follows: first, consulting process variables, spontaneity
and professionalism are related to the effectiveness of consultative supervision both directly
as well as indirectly. Yet, active learning variable is found to be the strongest in regards to
the influence on the consultative supervision effectiveness. Second, support by teachers in
charge is significantly related to all consulting process variables, whereas school resource and
principal’s support are not significant. Third, the structural relationship of factors is different
in terms of consulting type. That is, support by teachers in charge is the strongest predictor
for consulting process and effectiveness when it comes to individual consulting, while
principal’s support is the strongest predictor in group consulting. Besides, the influence of
spontaneity and professionalism on the consulting effectiveness is significant both directly and
indirectly in group consulting, whereas in individual consulting, only direct effect of
spontaneity and indirect effect of professionalism are significant. The overall results show that
school support affect the effectiveness of consulting mediated by consulting process, with
differences between consulting types such as statistically significant route and relative size of
standardized coefficients. These findings suggest that policy implications to improve the
process of consultative supervision be conducted at both school and district level.