Faculty and Staff
Mr. Dave Keller: President
Education:
BA in Economics, Manhattan College
MBA, University of Arizona
Post-Baccalaureate Secondary Education Teaching Certificate, Pima Community College
MA in Educational Administration, University of Notre Dame
dkeller@staugustinehigh.com
Dr. Christopher Loya: Principal
Education:
BA in Education, University of Arizona
ME in Educational Leadership, Northern University
PhD in Language Reading and Culture, University of Arizona
cloya@staugustinehigh.com
Mrs. Melissa Lopez-Gruenhagen: Vice President of Operations
Education:
BS in Secondary Education, Northern Arizona University
MA in Educational Leadership, University of Notre Dame
MBA, Unversity of Arizona
mlopezgruenhagen@staugustinehigh.com
Ms. Stacy DeLong: Finance Director
Education:
BA in Business Administration/Accounting, Morningside College
MBA, Southern New Hampshire University
sdelong@staugustinehigh.com
Mrs. Tanya Bullard: Dean of Academics
Education:
BA in Political Science, University of Arizona
Post-Baccalaureate Teaching Certificate, Pima Community College
Certification in Catholic School Leadership, Creighton University
M.Ed in Educational Leadership, Creighton University
tbullard@staugustinehigh.com
Mr. Andres Ramirez: Dean of Students
Education:
BA in Mathematics, University of Arizona
MA in Educational Leadership, University of Arizona
aramirez@staugustinehigh.com
Mrs. Cathy Meyer: College and Career Counseling
Education:
BS in Education-Spanish, University of Missouri
MA in Curriculum & Instruction, University of Missouri/Kansas City
cmeyer@staugustinehigh.com
Mrs. Alexis Rojas: Admission Director
Education:
Ba in Psychology, University of Arizona
Associates in Liberal Arts, Pima Community College
arojas@staugustinehigh.com
Fr. Manu Franco-Gomez, O. Carm: School Chaplain
Education:
MDiv, Catholic University CUA
MFA, Savannah College of Art and Design (SCAD)
mfranco@staugustinehigh.com
Mrs. Karen C Brady: Director of Campus Ministries
Education:
BA in Elementary Education - University of Arizona
MEd in Teaching and Teacher Education with an emphasis on Environmental Education - University of Arizona
MRE (Masters in Religious Education) Loyola University New Orleans
kbrady@staugustinehigh.com
Mr. Rene Huerta: Athletic Director
Education:
Executive Leadership Certification, University of Notre Dame
BBA in Sports Management, Benedictine University
ABA, Pima Community College
rhuerta@staugustinehigh.com
Ms. Miriam Zavala: Director of Marketing and Advancement
Education:
BS in Retail and Consumer Sciences, University of Arizona
BA in Hispanic Literaute Emphasis, University of Arizona
MA in School Management, Universidad de Alcala (UAH) Madrid
mzavala@staugustinehigh.com
Mrs. Chrecentia Nduwimana: Learning Lab
Education:
BS in Economics from the University of Burundi
Certificate of Content Area Instruction with a Major in Mathematics, American College of Education
M.Ed in Secondary Education, University of Arizona
cnduwimana@staugustinehigh.com
Mr. Joe Casey: Learning Lab
Education:
BS in Chemical Engineering, University of Notre Dame
MBA in Organizational Management, Columbia University Graduate School of Business
jcasey@staugustinehigh.com
Mr. Karl Sieglaff: English
Education:
B.S. Renewable Natural Resources, University of Arizona
Post-Baccalaureate Secondary Education Teaching Certificate, Pima Community College
ksieglaff@staugustinehigh.com
Mr. Ben Min: English
Education:
BA in English, The Ohio State University
MA in literature, American University, Washington DC
Teaching Certification, Howard University
bmin@staugustinehigh.com
Ms. Clara Pater: English
Education:
BA in Social Relations & Policy and Criminal Justice, Michigan State University
MA of Education, The University of Notre Dame
cpater@staugustinehigh.com
Mrs. Lisa Imblum: Art
Education:
BA in Liberal Arts-Art , University of Colorado
Post-Baccalaureate Teaching Certification Program, Art Education, English and English as a Second Language, University of Arizona.
limblum@staugustinehigh.com
Mrs. Cossetti Linder: Music
Education:
BA in Music, University of Arizona
MA in Education, Grand Canyon University
MA in English, Arizona State University
cquijada@staugustinehigh.com
Ms. Bren Chambers: Mariachi Director
Education:
BS in Music, Eastern Nazarene College
bchambers@staugustinehigh.com
Ms. Kassondra Sala: Theater
Education:
BA in Law, BA in Live and Screened Performance, University of Arizona
(Anticipated graduation 2026)
ksala@staugustinehigh.com
Mrs. Rosemary Bryerton: French and Culinary
Education:
BA in Humanities- French; University of Arizona
Post-Baccalaureate Secondary Education Teaching Certificate, Arizona State University
rbryerton@staugustinehigh.com
Ms. Egna Maldonado Omana: Spanish
Education:
BA in Spanish Language and Communication, University of Pamplona (Colombia)
MA in Spanish as a Foreign Language, UNIR, La Rioja (Spain)
emaldonado@staugustinehigh.com
Ms. Vianey Rojas: Spanish
Education:
BA in Creative Writing, University of Arizona
vrojas@staugustinehigh.com
Ms. Brianna Mustard: Math
Education:
BS in Mathematics Education and Spanish, Black Hills State University
M.Ed in Teaching and Learning (Emphasis in STEM), University of Arizona
bmustard@staugustinehigh.com
Mr. Alex Mata: Math
Education:
BS in Mathematics, University of Arizona
MS in Mathematics, University of Arizona
amata@staugustinehigh.com
Mr. Joeynel Pontevedra: Math
Education:
MST in Mathematics, Surigao Del Sur State University
jpontevedra@staugustinehigh.com
Ms. Annabel Pederi: Science
Education:
Ed.D in Science Education (CAR), Cebu Normal University
MAEd in General Science, Surigao State College of Technology
BS Ed in General Science, St. Paul University Surigao
apederi@staugustinehigh.com
Ms. Danna Gonzalez: Science
Education:
BS in Industrial Engineering, Texas A&M University
dgonzalez@staugustinehigh.com
Mr. Bradley Linder: Social Studies
Education:
BS in Secondary Education History, Northern Arizona University
blinder@staugustinehigh.com
Ms. Sarah Welsh: Social Studies
Education:
BA in History, University of Arizona
MA in World War II Studies, Arizona State University
swelsh@staugustinehigh.com
Mrs. Stephanie Gaona: Theology
Education:
BA in Catechetics and Theology, Franciscan University
MA in Theology & Ministry, Boston College
sgaona@staugustinehigh.com
Mrs. Janice Moore: Theology
Education:
B.A. in Spanish and Education, Loras Collège
M.Ed. in Special Education, University of Arizona
M.A. in Educational Leadership, University of Notre Dame
jmoore@staugustinehigh.com
Mr. Jonah Kane: Theology
Education:
BA in Theology and Catechetics, Franciscan University
jkane@staugustinehigh.com
Ms. Sokha Wise: Science
Education:
Bs in Health Science, California State University Fresno
M.Ed in Teaching and Teacher Education, University of Arizona
swise@staugustinehigh.com
