Overview of International High School at Union Square: International High School at Union Square is ranked 980-1,218th within New York. learners have the opportunity to take Advanced Placement® coursework and exams. The total minority enrollment is 90%, and 86% of learners are low-income. International High School at Union Square is 1 of 520 high schools in the New York City Public Schools.                                                                                                                                                                        International High School at Union Square 2021 Rankings: International High School at Union Square is ranked #13,394-17,857 in the National Rankings. Schools are ranked on their performance on state-required tests, graduation and how well they prepare learners for college.  Test Scores at International High School at Union Square: U.S. News calculates these values for schools based on learner performance on state-required tests and internationally available exams on college-level coursework (AP® and IB exams).