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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

Upcoming Tours

Please reserve your place by registering for any upcoming tour/event.

School Brochure

BASIS Phoenix South is an open-enrollment, TUITION-FREE public charter school serving grades K-8. Anyone can attend, and everyone is welcome!

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School Leadership

Michelle Astwood
Michelle Astwood
Head of School

Ms. Astwood joined the BASIS Charter School network in 2016 as a Learning Expert Teacher and then became the Director of Academic Programs at BASIS Scottsdale Primary East before transitioning to Head of School at BASIS Chandler Primary South in 2018. She has been the Head of School at BASIS Phoenix South since March 2020.

  • MA, Teaching and Learning with a Specialization in Elementary Reading, Nova Southeastern University
  • BS, Psychology, Georgia State University

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

Annie Rowley
Annie Rowley
Director of Academic Programs

Ms. Rowley joined BASIS Charter Schools in 2018 as a Special Education Coordinator at BASIS Peoria. In January 2021, Ms. Rowley joined BASIS Phoenix South as the Special Education Coordinator before transitioning to the Director of Student Affairs role and then the Director of Academic Programs role.

  • MS, Special Education with an ESL endorsement, Dominican University
  • BA, Elementary Education, Dominican University

Christina Kosednar
Christina Kosednar
Director of Planning and Instruction

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