This study employs multi-level linear statistical modelling to examine the power of school-level and individual-level factors to predict individual differences in scores recorded on the Francis Scale of Attitude toward Christianity by 6,036 students (who self-identified as either Christian or no religion) in year-seven, year-eight, year-nine, year-ten, and year-eleven classes within 10 Christian ethos secondary schools. The data demonstrate the complex relationships between school admission policies, parental church attendance (PCA), and the students' age and sex. Overall PCA emerges as a decisive factor in promoting a positive attitude toward Christianity among students. Christian ethos schools may wish to give greater attention to the importance of parental religiosity in maintaining the Christian ethos of these schools.