Meet Our Staff

Central overseas education services


Dr. Pellegrini established Central Overseas Education Services in 1994 and is a TESOL Instructor. He has an extensive education background holding a Bachelor's degree from the University of Waterloo, a Diploma in Technical Education and B.ED from the University of Toronto, a Masters of Education from Niagara University, and a PH.D. in Education from The University of New Mexico. He also holds a Certificate in Gerontology from Toronto Metropolitan University (formerly Ryerson University) and Music Teaching qualifications for both Choral and Instrumental Music.

As an academic, he has taught in teacher-training programs at York University and the University of Toronto, including post-graduate certification courses for licensed teachers, as well as in the Masters of Education program in New York State. He has also represented various American and Canadian Universities for the purpose of international overseas admission and served as a Mentor for adults wishing to fast-track their own personal degree studies. Being labelled as a "retarded child" in first grade gave rise to his...

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Kiley is the Director of Recruitment and International Operations. She is a 2014 TESOL program graduate, holds a Bachelor degree in Sociology from the University of Prince Edward Island, and a Law Clerk Diploma from Seneca College.

She was born in South Korea and spent most of her childhood in the Philippines. From having prior experience and exposure to different cultures and environments, she applied those life skills into managing various numbers of regional directors of the organization from all over the world, as well as overseeing each student's job placement process on a day-to-day basis.

"I believe that it is never too late to learn something new every day. If we don't learn something and grow from it, we are not living."

Erin Tandan

Erin is the Director of Marketing and Enrolment. She is a 2023 TESOL graduate, an experienced teacher, and holds a Bachelors degree in Health Sciences from Western University.

Erin has 8 years of teaching experience working with children of all ages as well as adults. She self-developed a successful private swimming lesson business, which provided her with valuable skills in business development, marketing, and enrollment. She has continued expanding her educational career by becoming TESOL certified and teaching English to speakers of other languages online. Working with a broad range of non-native English students has enlightened Erin on the vast market and demand for Native English teachers.

Erin understands the unique aspects of the learning process and the dynamics of learning styles for all students. She believes the Central Overseas Education Services TESOL course adequately equips individuals with the necessary skills to be a memorable teacher online or overseas. She aspires to inspire future TESOL students and teachers to connect with individuals of other...

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Sarah is the Regional Director of Canada and a Certified TESOL Instructor for the Ottawa Area. She has been a TESOL Certified Instructor since 2020 leading students through their own TESOL experience and teaching journey in both in-person and online classrooms. Her approach is a sincere and personal one, that is engaging and supportive. Sarah wants to see her students succeed and you will feel empowered throughout her course.

Sarah has a Bachelor of Arts in History from Nipissing University, she has the widely recognized and respected Certified Fund Raising Executive credential from CFRE International (2018), and she is a Certified Wedding Coordinator through the Wedding Planners Institute of Canada.

In addition to this, Sarah is a multi-passionate and successful entrepreneur. She started a Wedding & Event Planning business in 2011, and brought it online in 2019 with clients across Canada and the United States. In February of 2020 she transitioned her online focus to Mindset & Business Coaching for Women, and quickly scaled her business during the...


Milicia is a Regional Director of Asia, China, and the Balkan States. She holds a Bachelor's of Science degree in Management with a focus on Leadership. Milicia is an ESL teacher and TESOL instructor currently focused on the market in China. Her methodology is based on NLP and focused on personal development, setting goals, and changing current habits for more useful ones.

She also works as a Professional coach helping individuals maximize their performance goals. Milicia is supportive of anyone who is ready to take responsibility, unlock potential, overcome fears and barriers, and build a happier and healthier life. Whether it's teaching English, learning higher-level academics, or training for the Olympics.


Daria is a Regional Director of Russia and China. She is a 2016 TESOL graduate, a TESOL Instructor, and holds a Bachelor’s degree in Information Engineering and Technology from the Technical University in Russia.

Daria has extensive experience teaching ESL to children in training centres in Hangzhou China. Her love for constant study led her to work with preschool children correcting developmental delays. Daria currently lives in St. Petersburg Russia where she continues to teach English online and hosts podcasts on psychology and pedagogy.

Daria believes that the TESOL certification program opens up the world to students by improving communication skills, encouraging personal development, and providing freedom to choose the possibilities of your realization.