Barbara Castro Guimarães Head of DP

Ms Barbara Castro de Guimarães

Head of DP

Francisco Vargas Vice-Principal and Head of Curriculum ELT

Born and raised in Valencia, Venezuela, Francisco started his international educational career in 2003 at Colegio Altair in Lima, Peru, as MYP Coordinator and Mathematics/Physics teacher. In January 2006, he moved to Davy College in northern Peru to a similar position where he remained until August 2012 when he joined OIS as Mathematics Coordinator and Maths/Physics teacher and became Vice-Principal in 2014. Since 2006 Francisco developed his IBO career in the roles of MYP Moderator, MYP Workshop Leader in Mathematics, Sciences, Interdisciplinary teaching and learning and Inquiry-based learning, as well as Visiting Team Leader and a curriculum – examinations author and consultant. So far he has delivered more than 50 IBO workshops in 15 countries and his passion for education is continuously nourishing his professional practice. He has a degree in Electrical Engineering, a Post-Graduate in Educational Management and Didactics of Physics and more recently teacher training in Particle Physics at CERN.

OIS is a vibrant learning community fully committed to the IBO Philosophy. It considers student’s development beyond the academic area. This sense of community and value have inspired and helped retain him since 2012. In his free time, Francisco likes ride motorcycles, read and practise outdoor sports.

Gemma Montefiore Head of MYP – PHE and PSPE Teacher

Ms Gemma Montefiore

Physical and Health Education (PHE) Teacher

Head of MYP

Jonathan Chambers Head of PYP

As a passionate educator and student advocate Jonathan has been a leader for twelve of his twenty-five years in education, although he very much remains a teacher at heart.

Jonathan’s learning journey has been built upon extensive experience across various countries, not only enriching his teaching philosophy but also nurturing his commitment to inclusivity and intercultural understanding. As an IB Programme and Workshop Leader, his focus on inquiry-based learning through the International Baccalaureate Framework reflects his dedication to ensuring that every student can engage meaningfully and take ownership of their learning.

Additionally, Jonathan´s role as a CIS Accreditation Team Evaluation visitor has enhanced his ability to assess and promote best practices in diverse learning environments. Coupled with his certification in school management and leadership from Harvard Business School, Jonathan embodies the qualities of a knowledgeable and relational leader, emphasizing the importance of relationships in fostering growth and success.

As a father, his involvement in his children’s PYP journey has deepened Jonathan´s understanding of education’s personal and transformative nature, highlighting the importance of nurturing passion and equipping children with the necessary skills to make a positive impact in the world. Jonathan’s approach encapsulates the essence of a dedicated educator who seeks not only to teach but to inspire and uplift others.

Robert Tomalin Principal

Robert Tomalin is the Principal of Oeiras International. He was born in the United Kingdom, is also an Irish citizen, and defines himself as European.  As an IBDP graduate from the UWC of the Adriatic, Italy, service learning and giving back to his communities is something that is at his very core. While he was on a gap year in eSwatini, he realised his vocation was learning and teaching and that educational leadership would be the direction in which he would steer his life.

After four years at University College London studying Political Philosophy with Italian and Swedish (including an Erasmus year at Lund University in Sweden), he completed his Post Graduate Certificate in Education at Bristol University. He worked for eight years in state schools in the UK before moving to Bogotá to begin leading the Secondary Section of Colegio Gran Bretaña. In 2017 he became the whole school Director of the same school. Life-long learning is important and in 2018 he completed his MA in International Education at the University of Bath, and obtained the Certificate of International School Leadership from the Principals Training Center in the USA.

He is a multi-lingual, internationally-minded school leader who describes himself as emotionally intelligent and an excellent communicator. He understands that if children do not feel safe, they cannot learn, and as a result places child protection and safeguarding at the core of everything he does.

Robert has been trained as a CIS and NEASC Accreditation Team Evaluation visitor and leader, is an active member of the IB’s Education Network who runs workshops from their leadership qualification as well as visiting schools and inspecting exam procedures.

Robert enjoys travelling, cycling, learning languages and is a qualified SCUBA rescue diver.

Robert recently became a father when he and his husband adopted a baby boy at home in Colombia, and loves the excitement and challenges of parenthood. Being a father, he says, helps him see learning through a new lens.