Query: Who is the headmaster of the Christian Brothers of Ireland Stella Maris College?
Context: Established in 1955, it is regarded as one of the best high schools in the country, blending a rigorous curriculum with strong extracurricular activities. The school's headmaster, history professor Juan Pedro Toni, is a member of the Stella Maris Board of Governors and the school is a member of the International Baccalaureate Organization (IBO). Its long list of distinguished former pupils includes economists, engineers, architects, lawyers, politicians and even F1 champions.