The purpose of this study was to determine whether teachers' perceptions of self-efficacy and collective teacher efficacy are interrelated and how these two constructs may be impacted by teacher demographic characteristics, such as educational level, grade level taught, and number of years of teaching experience. This study focused entirely on the interrelationships of teacher efficacy and collective teacher efficacy in three suburban, conservative Christian schools in north Texas. Specifically, the demographic characteristics of age, gender, ethnicity, particular school campus, number of years teaching, number of years teaching at the current school, highest degree received, type of teacher certification, certification grade level and subject area, grade level taught, and particular subject taught were studied for the non-random, convenience sample of 216 kindergarten through twelfth grade teachers. A correlational analysis of teacher efficacy and collective teacher efficacy yielded a Pearson r of .35 at a statistically significant level (p < .01); combining these two variables with teacher demographic variables in multiple regression analyses confirmed the relationship between teachers' perceptions of teacher efficacy and collective efficacy at a statistically significant level (p < .001). A review of the squared structure coefficients in the first multiple regression analysis (R2 = .284, p < .001) showed that individual teachers' perceptions of collective teacher efficacy explained the largest amount (43%) of the variance in teacher efficacy, followed by years of teaching experience (17%) and number of years of teaching at the current school (14%). A review of the squared structure coefficients in the second multiple regression analysis (R2 = .395, p < .001) indicated that individual teachers' perceptions of teacher efficacy explained the largest amount of variance in collective teacher efficacy (31%), followed the elementary teacher variable (22%) and particular school (19%).