What is the act score requirement for southern Methodist university?

Southern Methodist University doesn't provide a specific ACT score *requirement*. Instead, they look at the ACT score as one factor among many in a holistic review process. While they don't publish a minimum, admitted students generally have very competitive scores. To get a sense of the range, you should look at the middle 50% range of ACT scores for admitted freshmen, which is usually published on their website (often within their admissions statistics or freshman profile). Expect that range to be quite high, reflecting SMU's selectivity.