Social Studies Department

The Social Studies Department encompasses a broad array of subjects both historical and non-historical. Mullen history courses are designed to help students comprehend the world in which they live with reference to cultural, political and economic forces and events. Non-history based courses, e.g. Geography and Psychology, are designed to further the student's knowledge of self, others and the physical world by way of scientific or philosophic inquiry. The department aims to foster the development of independent and critical abilities, effective communication skills, organizational competence and self-discipline. More importantly, the Department is committed to inculcating the ethics of Catholic-Christianity so that our students can become people of both faith and reason.


Barbara Figg
Social Studies Department Coordinator
Barbara Figg graduated from the University of Northern Colorado with a Bachelor of Arts degree in Special Education with a minor in World History and a Master's degree in Special Education. Mrs. Figg came to Mullen High School in 2001 after retiring from Jefferson County Schools. She is a Holocaust scholar with the Colorado Holocaust Educators, a U.S. Holocaust Museum Teacher Fellow and a 2008 graduate of Yad Vashem in Israel. She presently helps coordinate the H.O.P.E. (Helping Others Promote Equality) Club and teaches AP Government, Holocaust, and Mentoring in Elementary Education for seniors.
Liz Castellano
Social Studies Department and De la Sal Department Coordinator
Liz Castellano is originally from Wheat Ridge, Colorado and graduated from Mullen in 2005. Liz attended Regis University on an academic scholarship where she received a B.A. in History and Education and an M.A in Linguistically Diverse Education. During that time, she volunteered with the Somaly Mam Foundation and Lutheran Family Services to assist in teaching English to non-native speakers. While at Mullen, Liz has taught World History, U.S. History, Geography and currently directs the De La Salle Program.
Tammy Christensen
Social Studies Department
Tammy Christensen received her Bachelor of Science degree in Social Science from the University of Southern Colorado and a Master's degree in Education. Mrs. Christensen is also a Buttimer Graduate from St. Mary’s College. She has been teaching at Mullen High School for 16 years as a member of the Social Studies Department and currently teaches Government, Law, Forensics, World History and Study Skills. Mrs. Christensen is a sponsor for Young Republicans and Mullen’s World Affairs Challenge team. She is the mother of four, three of which have graduated from Mullen.  
Tim DeNezza
Social Studies Department
Tim DeNezza holds a degree in Government from Harvard University made available through a Naval ROTC scholarship. After graduation, he served as an officer in the US Navy for four years and then left the military to obtain a Master's Degree in teaching from Seattle University. Mr. DeNezza begins his 14th year as a teacher and his fifth with Mullen High School.
Michael Eman
Social Studies Department
Michael Eman received his Bachelor of Science degree from Concordia University majoring in History and Psychology with minors in Mathematics and Theology. After his first tenure of teaching, Mr. Eman worked in the mental health field, completing a Master’s degree in Psychology and a post-graduate study with a license as a School Psychologist, before returning to the classroom. Mr. Eman has been a Social Studies teacher at Mullen since 2006 and is the lead coach for Knowledge Bowl.
Mickey Mitchell
Social Studies Department
Mickey Mitchell received his BA from Ohio Wesleyan University, an MA in Education from the State University of New York in Binghamton, and his Ed.D in Curriculum and Instruction from the University of Northern Colorado. He taught for 32 years in the Littleton School District and most recently at the Denver School of Science and Technology for three years. He is currently teaching US History and US Government classes at Mullen.
Katie Schneringer
Social Studies Department
Katie Schneringer is a graduate from Mullen High school in 1995. Mrs. Schneringer graduated from Lake Forest College in Illinois with a Bachelor of Arts degree in History and Education and a Master’s degree in Cross-cultural education and ESL. Mrs. Schneringer is currently teaching history. This is her 10th year at Mullen.
Contact Dean's Office

Mr. Joe Welling
Dean of Students
303.761.1764 ext. 3314

Mrs. Gail Andrews
Attendance Office

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