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Picture of Paul Campbell

Paul Campbell

Head of Regional Development Americas

Since 1988, Paul Campbell has worked for the IB in numerous capacities. He has assisted hundreds of schools and school systems in starting and sustaining IB programmes. Over the years, he has been involved in creating the IB educator network (IBEN); the organization's services to school districts; and advocacy work with universities and governments.

He currently serves as the Head of Development and Outreach at the IB's global center in Washington, DC. He lives in Maryland with his wife, an archaeologist and specialist in historic preservation, and his daughter, an IB Diploma Programme (DP) student at Albert Einstein High School, a public school in Kensington.

 Picture of Natalia Tieso

Natalia Tieso

Regional Development Manager for Latin America

Natalia Tieso was born in the city of Buenos Aires, Argentina, and has been involved in the education sector for over 20 years. She began her career as an English teacher and academic coordinator at pre-school, primary and secondary level in private and public schools. She went on to work in educational publishing as Editor and Academic Coordinator at Macmillan Publishers and subsequently as Head of Marketing at Richmond, Grupo Santillana. Natalia joined the International Baccalaureate Organization in 2012 as Buenos Aires Office Manager and is currently Regional Development Manager for Latin America.

Natalia graduated as a bilingual English and Spanish teacher from Sofía E. Broquen de Spangenberg Modern Languages teacher training school. She holds a Bachelor’s degree in English (Universidad Argentina de la Empresa, UADE) as well as a Specialist Qualification in Education Management (Universidad Torcuato Di Tella business school, UTDT). She has also completed postgraduate studies in Digital Marketing (Universidad Tecnológica Nacional, UTN) and Talent Management (Escuela Superior de Economía y Administración de Empresas, ESEADE).

In 2016, she obtained her Master’s degree in Education Management (Universidad Torcuato Di Tella, UTDT), having completed her thesis on the importance of hidden stakeholders in the development and implementation of public policies. In 2020, she studied a postgraduate course in Inclusive Leadership (Pontificia Universidad Católica Argentina, UCA).

 Picture of Dalit

Dalit Halevi

IBEN Manager – Americas 

Dalit joined the IB in 2014 and has worked in education for over 20 years. She has taught in a school offering the Diploma Programme (DP), coordinated the DP, and served in IB Educator Network (IBEN) roles such as workshop leader, site visit member, consultant and examiner. She is also the first IB member of staff to receive the IB Advanced Leadership Award.

Dalit holds a Bachelor’s degree in Psychology and a Master's degree in Educational Leadership. The IB mission statement is her motivation to support a network of educators in the American continent who are ambassadors of our programmes and who reach out to teachers and schools so that their students can have a better learning experience and be more successful in life.