Iowa State enrolled 7,375 students in summer session opportunities this year, about 60% of them at the undergraduate level. Just under half (48%) of all summer students are enrolled in online classes only. According to enrollment data collected by the university registrar's office, the summer student body features 4,666 undergraduates, 2,555 graduate students and the 154 members of the fourth-year Doctor of Veterinary Medicine class in their 12-month finaleStudents in many degree programs completing not-for-credit internships that are encouraged, though not required. While some students record these high-impact summer experiences through the university's 390 internship course series, hundreds did not.