Leadership Team

Rachel H. Monárrez, PhD
Superintendent of Schools
superintendent@orangeusd.org

Assistant Superintendents

Matthew Witmer, EdD

Assistant Superintendent
Educational Services
mwitmer@orangeusd.org

Olga McCullough
Assistant Superintendent
Human Resources

Yuri Calderon

Interim Assistant Superintendent/CBO
Business Services
ycalderon@orangeusd.org

Ernest Gonzalez

Assistant Superintendent
Student Support & Community Engagement
ernest.gonzalez@orangeusd.org

Heriberto Angel

Executive Director
Student & Community Services
hangel@orangeusd.org

Lisa Green

Executive Director
TK-12 Curriculum & Instruction
lgreen@orangeusd.org

Elena Rodriguez

Executive Director
Elementary Education
erodriguez@orangeusd.org

Kevin Astor, EdD

Executive Director
Human Resources
kastor@orangeusd.org

Christina Lin, EdD

Executive Director
Assessment & Accountability
shaol@orangeusd.org

Sue Singh, EdD

Sr Chief Executive Officer
of Student Services, SELPA, Special Education
ssingh@orangeusd.org

Meghna Bulsara

Executive Director
Business Services
mbulsara@orangeusd.org

Dipali Potnis, EdD

Executive Director
Secondary Education
dpotnis@orangeusd.org

Katie Arciniega

Interim Director
Contracts & Purchasing
karciniega@orangeusd.org

Diana Gaeta

Director
Risk Management
dgaeta@orangeusd.org

Tam Nguyen

Chief Technology Officer
Information Technology
tam.nguyen@orangeusd.org

Christina Celeste-Russo

Director
Transportation & Mechanical Services
cceleste@orangeusd.org

Steve Harlin

Director
Maintenance & Operations
sharlin@orangeusd.org

Jamie Sanchez

Director
Nutrition Services
jamie.sanchez@orangeusd.org

Sharon Davis

Director
Payroll
sharon.davis@orangeusd.org

Arlene Magana

Director
Fiscal Services
arlene.magana@orangeusd.org

Susanna Solis

Director
Human Resources
ssolis@orangeusd.org