Data from the 809 teachers who participated in the study (about 500 words
from each respondent) were coded according to guidelines for inductive exploratory
research and comparative analysis (Glaser, 1978, 1992; Glaser
and Strauss, 1967; Strauss and Corbin, 1990). Line-by-line analysis produced
categories and subcategories for principal characteristics (e.g. strategies,
behaviors) teachers identified with both effective instructional leadership and
ineffective instructional leadership, as well as impacts on teaching (i.e.
teachers' thoughts, behaviors, and feelings related to teaching, and
effectiveness of each leadership characteristic). To check the researchers'
analysis, coders inspected segments of the research data, reaching a high
degree of consistency (0.90).