Executive / Administrative Team 
(Preliminary Renewal Petition language for submission for charter renewal 2021 - 2026)



2006 - a small team of arts and academic enthusiasts started on a mission to create a place where socio economically disadvantaged students would be able to pursue interests in a variety of arts programs while obtaining a high quality academic education. The mission of this school was to create a free public program that would provide a creative, challenging, and nurturing environment that offers secondary students innovative preparation for a university education and pursuit of the arts.

2008 - with a very small amount of startup capital from federal grants, Encore Jr./Sr. High School for the Performing & Visual Arts opened in Hesperia, California (“Encore - High Desert”) with 580 students under the direction of the nonprofit corporation, Encore Education Corporation.

2015 through 2020 - Encore Education Corporation opened a second campus in Riverside County under the oversight of Riverside Unified School District.  At the end of the first charter term, Encore was renewed by RUSD after months of negotiation.  However, the uncertainty of the renewal was met with COVID-19 closures and ultimately resulted in the Riverside campus losing 66% of their student enrollment during the closure, attributed to the commuter nature of student population.  Encore's School Board ultimately voted to shut down the Riverside campus starting in the fall of 2020 due to lack of enrollment. 

Charter Terms - Encore Education Corporation has had charter petitions granted through Hesperia Unified School District with unanymous "yes" votes from the HUSD School Board three times.  Encore's first term in Hesperia was for three years.  The next term was for five years.  The third term was also for five years.  During the 20/21 school year, Encore will petition for a fourth charter agreement for five years starting in the 21/22 school year.

Executive / Administrative Team - Encore is pleased to introduce the Executive / Administrative staff that is responsible for the overall operations of Encore High School.

Mrs. Denise Griffin, Chief Executive Officer
(Masters in Business Administration / Private School Administration Certificate) - Responsible for marketing, policy, logistics, reporting, staff training, governance, budgets, arts program management)

  • Mrs. Griffin has operated as the CEO of Encore Education Corporation since inception. 

  • Her history includes a 26-year career in business marketing and organization with major corporations nationwide.

  • She has an extensive background in creating, organizing, and operating businesses as she has spearheaded the opening of Star Quest Arts Academy and other entertainment based businesses over the last twenty-three years

  • Cofounder of Encore Education Corporation and has been the CEO since 2007.

  • Email address ceo@officerteam.com.

Mr. John Griffin, Chief Operations Officer

(Bachelors in Business Administration / Private School Administration Certificate) - Responsible for Public Relations, District Communication, Campus Operations, Student Discipline

  • Mr. Griffin is a veteran certificated teacher from the Hesperia Unified School District for nine years at Hesperia High School.

  • He has an extensive background in business management with over ten years’ restaurant operations and management for several high traffic stores with budgets over $3,500,000 annually.

  • His duties as a General Manager placed him in several situations where he successfully handled all aspects of business operation and budgets. 

  • Cofounder of Encore Education Corporation and started as the Dean of Students of the Hesperia site, promoting to Chief Operations Officer in 2012.

  • Email address jgriffin@officerteam.com.

Mrs. Julia Dolf, Dean of Academics

(Masters in Education Leadership & Administrative Credential in process completion this year.  Bachelors in Liberal Studies. Cleared Multi Subject Teaching Credential and supplemental credentials with Math and English) - Responsible for teacher management, credentials analyst, curriculum development, professional development

  • Mrs. Dolf is a veteran teacher / administrator that has worked on a variety of campuses both in traditional district schools and charter schools.

  • She was hired with Encore Education Corporation in 2015 as a full time credentialed teacher.

  • Her duties at Encore have ranged from teacher, to Department Chair, to Assistant Dean of Academics, and then assuming the role of Dean of Academics in the fall of 2020

  • Email address jdolf@encorehighschool.com

Mrs. Ashlin Barkdull, General Executive Manager Human Resources, General Operations

Responsible for communications, calendar, human resources, and accounts payable

  • Mrs. Barkdull has been with Encore since 2011.

  • She has undergone extensive training for human resources and general management of general operations within the organization.

  • She started with Encore as an Executive Assistant and was promoted to Office Manager, then Human Resources, and then General Executive Manager.

  • Her role within the organization is critical to tie in all communication between vendors, staff, administration, and executive teams.

  • Email address abarkdull@encorehighschool.com


Office: 760-949-2036

Hesperia: 760-956-2632 


16955 Lemon Street

Hesperia, CA 92345

Established 08/08/08

© 2020 Encore Education Corporation

Encore Education Corporation does not and shall not discriminate on the basis of race, color, religion (creed), gender, gender identity or expression, age, national origin (ancestry), ethnic group identification, mental and physical disability, marital or parental status, sex, sexual orientation, or military status, or genetic information in any of its activities or operations. The perception of one or more of such characteristics: or association with a person or group with one or more of these actual or perceived characteristics. Encore Education Corporation is an equal opportunity employer.