Integrating content and language (ICL) has been a widely applied methodology of language learning and teaching in the last 20 years. However, ICL studies for first-year undergraduate students of science and engineering are scarce. This study examined perceptions of incoming students and professors who participated in ICL classes at a Korean science and engineering school. Most of the participants found the ICL classes helpful for students to develop a better understanding of content lectures and what to expect in regular content lectures. Also, many students found student-centered activities, consisting of group work, particularly motivating and effective. The study recommends a formula of ICL instruction for students entering a university with an EMI policy and concludes with suggestions for the successful implementation of ICL classes for content lectures in the areas of science and engineering.