Robyn Cross joined St. Mary's in 2009 as Director of Admissions and Math teacher. She later served as Director of the International Program, Dean of Students and Assistant Principal. A graduate of Louisiana State University, Robyn received her BS in Education. With over 35 years in Catholic education, she has taught elementary, middle and high school classes, earning her Master's in Educational Leadership in 2015.

A native of Baton Rouge, Louisiana, Robyn moved to Colorado with her husband and family in 2002. Robyn taught grades 4-8 at Pauline Memorial Catholic School (now St. Paul's) for 7 years before moving to St. Mary's.

Robyn and her husband Tommy are the proud parents of SMHS alumni Nicole '08, Lauren '10, and Lindsey '12. They love family time with their daughters, son-in-laws, and grandchildren.