Sara Davila is a Pearson Global Scale of English Ambassador and English-language specialist with expertise in language education, curriculum innovation, and educational technology. A former classroom teacher, she has designed and delivered hands-on GSE training programs for teachers worldwide, enabling them to monitor student progress with confidence. Sara has led national development initiatives in multiple countries, equipping instructors with actionable insights and proven strategies to tailor instruction and streamline planning. Based in Chicago and partnering globally, Sara is passionate about empowering educators and students to achieve their goals.

Fajarudin Akbar is a GSE Ambassador and educational technology practitioner based in Indonesia. He specializes in English for Academic and Professional Purposes, with a focus on equipping learners for real-world communication in academic and workplace contexts. His work integrates language teaching with digital tools, emphasizing practical, learner-centered approaches.

Hebatallah has 18 years of experience in teaching and educational leadership, with expertise in curriculum design and creative initiatives. Fluent in English and Arabic, she bridges cultural perspectives to enhance learning. A regular speaker at ELT conferences, she shares insights on educational development, assessment and teacher growth.

Billie Jago is a writer and teacher trainer specialising in digital learning materials and assessment resources. She is also the GSE ambassador for the UK. She has written for a number of well-known English Language learning titles and is a regular item writer for high stakes exams such as the PTE, IELTS and Cambridge exams. Alongside materials writing, she delivers international teacher training sessions, plenaries and workshops, and is the founder of the ELTcpd professional development platform and YouTube channel. She currently lives in Edinburgh, Scotland.

Nicolas, from Bogotá, Colombia, holds a bachelor’s degree in education with a focus on humanities and languages. After five years working as a systems technician, he transitioned into technology-driven education. He now leads a team at a prestigious English language institution, where he is dedicated to inspiring students throughout their language-learning journey through creativity and motivation.