St Hilda's is an English/Spanish bilingual Anglican school located in the province of Hurlingham in Buenos Aires renowned for a thriving music department, rugby and hockey team, and outstanding Cambridge examinations performances. Ray's role was to ensure that students were classed appropriately, and placed in the right levels related to language and academic abilities. He ensured the teachers prepared for their lessons to a high standard. He was responsible for walk-through observations and professional development guidance. He aided the teachers in their schemes of work and lesson planning and held workshops for the teachers periodically. As a DOS Ray was highly energetic, personable, well organised, multi-tasking and resilient under pressure.