Business Services

  • Arik AvanesyansThe National School District has chosen Mr. Arik Avanesyans, M.B.A. to serve as its next Assistant Superintendent of Business Services.

    Mr. Avanesyans brings over a decade of experience as a school business leader. He is joining National School District from the Upland Unified School District, where he served as the Assistant Superintendent of Business Services.

    He started his school business career in the Los Angeles Unified School District as a Senior Financial Manager; and has since held positions as Business Manager, Director of Purchasing, Chief Business Officer, and Assistant Superintendent of Business Services. Mr. Avanesyans recently received his Master of Business Administration degree at Marshall University, and is a Certified Chief Business Official through the California Association of School Business Officials. He earned a Bachelor’s degree from California State University, Los Angeles; and completed his school Business Management Program at the University of Southern California.

    The Governing Board unanimously approved his appointment at a closed session meeting held on March 24, 2021. Mr. Avanesyans will succeed Dr. Lisbeth Johnson, who most recently served as Interim Assistant Superintendent of Business Services for the District.

    In his words, Mr. Avanesyans shared, “National School District will find me an ethics-first leader that strives to build relationships with all stakeholders and who will always do what is in the best interest of the students I serve. I will strive to achieve the District’s goals and deliver on its mission every single day.”


Business Services Directors

  • Mr. Jon Hansen - Director of Business Support Services: Child Nutrition Services, Purchasing, and Warehouse

    Ms. Erina Cowart - Director of Finance: Budget and Accounting, Payroll, Benefits, Accounts Payable, and Risk Management

    Mr. David Castillo - Director of Maintenance, Operations & Facilities: Custodial Services, Grounds, and Facility Maintenance

    Ms. Candy Byerly - Director of Transportation: Bus and Van Transportation Services

    Here to serve, each member of the Business Services team is committed to providing you with outstanding customer service. Find who you are looking for in our staff directory or email 

Our Staff

Byerly, Candy
Director of Transportation
(619) 336-7706

Castillo, David
Director of Maintenance, Operations and Facilites
(619) 336-7770

Cowart, Erina
Director of Finance
(619) 336-7714

Fogerson, Virginia
Accounting Technician - Accounts Payable
(619) 336-7716

Guerrero, Michael
Financial Accountant
(619) 336-7713

Hansen, Jon
Director of Business Support Services
(619) 336-7735

Mancilla, Charleen
Payroll/Benefits Specialist - Certificated
(619) 336-7724

Noel, Perla
Payroll/Benefits Specialist - Classified
(619) 336-7715

Olea, Yvette
Information Compliance Specialist
(619) 336-7765

Sanchez, Evelyn
Administrative Secretary - Department/Program
(619) 336-7710