Our academic team

Jennifer Diaz Green-School Director
Jennifer Diaz Green-School Director

Jennifer Diaz Green

Jennifer Diaz Green has been involved in ELT education for over 20 years in both Argentina and Ireland. She has a Degree in English Language Teaching from Argentina and a Master’s Degree in Education from Trinity College Dublin. Since being a participant in the original Academic Management Course by ACELS over 10 years ago, she’s been involved in Academic Management. Her experience is mainly in ELT Human Resources, teacher workshops, curricula and material development and compliance.

Academic Manager

Billy Rogers

Billy originally trained as an actor at the Montview Academy of Theatre Arts in London, where he achieved a BA (Hons) in Performance – Musical Theatre. In 2004 he left London and travelled around Africa and Asia, where he eventually spent a year teaching English in China. He returned to Ireland in 2006 and has been working in the English language sector since 2008. Since completing the Cambridge DELTA in 2013, Billy has worked in teacher training and development, syllabus and course design, and supporting students with SEN. He joined ISI in late 2021.

Katherine Albertson

Katherine Albertson

Academic Assistant

Katherine has been teaching English for the last five years. She recently received her Master’s Degree from Trinity College in English Language Teaching and Linguistics. Prior to that, she taught English in Spain for two years. She has experience teaching a variety of English levels, and loves to incorporate current affairs and popular culture into her teaching.

Zeynep Sahin

Zeynep Şahin

Zeynep has been teaching English language to adults for the last 12 years. She has a BA degree in American Culture and Literature and MA degree in Educational Technology. Currently, she is studying for a Ph.D. in Curriculum and Instruction. Since she completed CELTA in 2013, she has been interested in classroom management, gamification, integration of technology into education and curriculum development.


Adele Ciuta
Alice Buffini
Angela Donohoe
Ciara Loughman
Conor Carroll
Daniel Brcko
David Giltane
Edia Connole
Eoin Knox
Finbar Ryan
Hanna Kurbanova

James Gaffney
Jennifer O’kelly
Jingwen Huang
John Dalton
Jolanta Green
Liam Cronin
Lucia Pacini
Madeleine Gray
Mariel Florentin
Mark Rochford
Marlene Smith

Masden Stibling
Olayinka Angulu
Paul McMahon
Rory Corcoran
Ru Bai
Ruzica Stankovic
Sinead Sheehan