Meet our amazing faculty!

An outstanding international faculty, including professionals from 11 different countries including Costa Rica, Spain, England, France, Mexico, Canada, Chile, Colombia, USA, and Venezuela. All faculty are certified in Montessori or IB, and have an average of 7 years of teaching experience. Five of our faculty possess either PhD or double masters degrees, 60% of possess a master’s degree, and 90% of our faculty are bilingual. The faculty to student ratio is 1:8, and the average classroom size is 20. The faculty are supported by two senior administrators (Head of School and Associate Head of School), two Curriculum Coordinators (Montessori and IB), a School Counselor, a Business Manager, and office and maintenance staff of four. 

To learn more about our amazing faculty, visit our Lower School Montessori Team (1.8 – 6 years old), and our Upper School & IB Team (7-18 years old)

Lower School Montessori Team

Our Care of the child should be governed not by our desire to make him learn things, but by the endeavor always to keep burning in him that light which is called intelligence.

Roberta Cummesky
Teacher
United States

Audrey Ruchaud
Teacher
France

Ana Mayorga
Teacher Assistant
Costa Rica

Daniela  Trejos
Teacher Assistant
Costa Rica

Estibaliz Arias
Teacher Assistant
Costa Rica

Efraín Avilés
Teacher Assistant
Costa Rica

Dillon, Carrie
Teacher
United States

James Cummesky
Curriculum Coord.
United States

 Matilde Jiron
Teacher Assistant
Costa Rica

Michelle Castro
Teacher Assistant
Costa Rica

Francela Arrieta
Teacher Assistant
Costa Rica

Inspired by our team?

If after meeting our talented and committed team of educators you feel inspired to join our school, please visit our Teach section to learn about current opportunities and the application process.

About our Team

At DMA, the Upper School faculty is charged with teaching students in grades 4 through 12, including the IB Diploma Program. To provide opportunities for vertical and horizontal curricular integration and alignment, our team is organized by learning cycles (4th-6th grade, 7th-9th grade, and 10th-12th grade) and instructional divisions: CAPE (Creative Arts and Physical Education Program), Humanities (Language Arts, Language Acquisition, and Social Studies), and STEM (Science, Technology, Engineering and Math).

CAPE Team

Creative Arts and Physical Education

Keren   Espinoza
Physical Education
Costa Rica

Sugely Barrantes
Practical Life
Costa Rica

Kiara López
Performance Arts
México

María Caceres
Movement
Venezuela

Upper School IB Team

Annabeth Jensen
English
United States

Lina Marín
Spanish Acquisition
Colombia

Miguel Simón
Spanish
Spain

Molly Giombi
Math
United States

Roberto Quirós
Math & Science
Costa Rica

Lissa Eidelman
Science
United States

Victor Braca
Social Studies
Venezuela

Julio López
Spanish Acquisition
Costa Rica

Jan Krieger
English Humanities
United States

Carlos García
Spanish
Spain

Chad Williams
IB Math
United States

Bill Sebring
IB Math 
United States

Monica Marín
IB Curriculum Coord.
Chile

Jorge Luis
IB Visual Arts
México

Marcel Brenes
IB Critical Thinking
Costa Rica

Carla Uribe
IB Biology
Spain

Emily Dittmann
IB English
United States

Del Mar Academy