The present study examined the 2015 Trends in International Mathematics and Science Study “Advanced” data to examine how the educational credentials of maths teachers and other teacher characteristics were related to attitude towards advanced mathematics and perceptions of engaged teaching among 12th-grade students enrolled in advanced mathematics courses in the U.S. As attitudinal outcomes in this study, two measures of attitude towards mathematics were employed – the Students Like Learning Advanced Mathematics scale and the Students Value Advanced Mathematics scale, and one measure of student perception of engaged teaching – the Students’ Views on Engaging Teaching in Advanced Mathematics Lessons. A set of multilevel regression analyses were conducted predicting each of these aforementioned outcomes. No statistically significant effects on the attitudinal outcomes were observed for teacher variables. Positive effects were noted for parental education on students’ valuing of advanced mathematics. A prominent finding was that higher levels of parental education were associated with higher student levels of valuing mathematics, which likely reflects a family/home culture that implicitly or explicitly places high value on science and mathematics. Identifying factors that might facilitate positive attitude is important to increase the likelihood that students will choose, and be retained in, mathematics and STEM education and careers.