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Welcome to BASIS Phoenix South, home of the Gilamonsters!

Our tuition-free, public charter school serves students in grades K–8. We are proud to be part of the BASIS Charter Schools network which has been providing world-class education since 1998. Our campuses follow a STEM-infused, liberal arts program designed to propel your student farther than they ever thought possible.

Everyone at the Phoenix South campus is here to cultivate a love of learning, natural curiosity, and the desire to excel in your student. Their success is our success.

BASIS Phoenix South Gilamonsters

5700 S. 19th Ave.
Phoenix, AZ 85041
Google Map
(480) 447 1795

Office Hours: M-F, 7AM - 4PM

School Leadership

Christina Kosednar
Christina Kosednar
Head of School

Christina has worked in education since 2005. Before joining BASIS Charter Schools in 2022, she served as a Dean of Students with an emphasis in Curriculum and Instruction, taught grades K–6, held the position of a Title I Reading Specialist, and ELA and SS Curriculum Specialist for another charter school network.

  • MEd, Early Childhood Education, Northern Arizona University
  • BA, Elementary Education, Arizona State University
  • SEI Endorsement, Reading Endorsement

Michelle Borie
Michelle Ethelbah
Head of Operations

Ms. Ethelbah has been with the BASIS Charter Schools network since 2015. She has over 19 years of experience managing both charter and private schools for grades K–12.

  • MEd, Educational Administration and Supervision, Arizona State University
  • BS, Business Management, Arizona State University
  • Certificate in International Business, Arizona State University

Kelsey Hilfigure
Kelsey Hilfigure
Director of Academic Programs

Kelsey began her career in education in 2017 when she joined BASIS Charter Schools.

  • MS, Leadership, Grand Canyon University
  • BA, Theater and Drama, Grand Canyon University

Tearra Fox
Tearra Fox
Director of Student Affairs

Tearra's career in education began in 2018 at BASIS Phoenix South as a Learning Expert Teacher. She then transitioned into the role of Subject Expert Teacher and now holds the role of Director of Student Affairs.

  • MEd, Educational Leadership, Arizona State University, SEI Endorsement
  • BA, Elementary Education, University of Arizona