Our Faculty & Staff

Curiosity is in the air.

Through small classes guided by expert teachers, our faculty support every student to be the best versions of themselves. Our classrooms are places where good questions are more treasured than good answers, and the authentic learning our students experience is both inspiring and transformative.

Looking to contact an individual? You may find the Campus Directory quicker.

Click an individual's name for more information.

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Ms. Jenny Treadway

Ms. Jenny Treadway

Director of Diversity, Equity & Inclusion, Director of International Programs
B.S., Eastern Kentucky University, Biology and Chemistry
M.S., University of Kentucky, Education and Instructional Technology
23 years at PCDS
Mr. David Tullis

Mr. David Tullis

Upper School Mathematics
First year at PCDS
Ms. Camelia Tumminello

Ms. Camelia Tumminello

Upper School Spanish
B.A., Yale University, French Literature
M.S., Yale University, French Literature
1 year at PCDS
Dr. Sarah Vap

Dr. Sarah Vap

Upper School English
B.A., Brown University
M.F.A., Arizona State University
Ph.D., University of Southern California
3 years at PCDS
Ms. Amy Walker

Ms. Amy Walker

Middle School Mathematics
First year at PCDS
Mr. Jim Waller

Mr. Jim Waller

Middle School Mathematics
B.Ed., Arizona State University, Secondary Education, History
M.Ed., Arizona State University, Higher and Postsecondary Education
9 years at PCDS
Ms. Kim Wass

Ms. Kim Wass

Lower School Learning Specialist
B.S., Iowa State University, Elementary Education
5 years at PCDS
Ms. Maddie Williams

Ms. Maddie Williams

Lower School First Grade
B.S., Arizona State University, Educational Studies
5 years at PCDS
Mrs. Molly Williams

Mrs. Molly Williams

Upper School Counselor, Director of Project Excellence
B.S.W., Concordia College, Social Work
M.S.W., Arizona State University, Social Work
14 years at PCDS
Ms. Joanna Wisniewska

Ms. Joanna Wisniewska

Lower School Fourth Grade
B.A., Arizona State University, Education - Early Childhood Teaching and Leadership
M.Ed., Northern Arizona University - Bilingual and Multicultural Education
5 years at PCDS
Ms. Debra Wood

Ms. Debra Wood

Science Dept. Chair, Middle School Science
B.A., Washington and Jefferson College, Biology
M.A., Slippery Rock University, Counseling Psychology
7 years at PCDS
Mr. Stefan Youngs

Mr. Stefan Youngs

Technology Support Specialist
B.S., University of Arizona, Psychology (Neural Sciences)
9 years at PCDS
Mr. Richard Zielenkiewicz

Mr. Richard Zielenkiewicz

Maintenance Staff
22 years at PCDS
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