The Muriel S. Snowden International School at Copley is a multicultural, multilingual urban high school in the center of Copley Square . Snowden is a college preparatory high school with an international studies and world language focus that offers a rigorous academic curriculum. The school’s mission is to foster a community in which individual students, faculty, and families function together to sustain global awareness and responsibility, high academic achievement, and the ability to succeed in a diverse American society.