The University of Illinois' massive size means "opportunities, lots of classes, lots of student groups," and "an incredibly lively campus." "The research support is phenomenal on campus" and "there are a lot of resources to supplement your studies." Students find the university's "fantastic library system" and "phenomenal advisors" to be "such a benefit for research projects," and "countless on-campus resources such as the Career Center, Writers Workshop, Office of Minority Student Affairs, free tutoring services, and the Study Abroad Office" also support students' academic experiences. They praise their professors as "wonderful," "not just good at research but also instructing and mentoring," and "very approachable," and students thrive on the emphasis on experiences outside the classroom: "The field work (tons of field work) that they make us do really helped in getting used to the field." "Most professors here are devoted to teaching, not researching." Classes can be big-"As an underclassman, many classes I've taken have been with very large classes"but "the professors are engaging and know how to keep a class of 700-plus entertained." U of I's programs in business and engineering have long been recognized as among the best, and one student says, "I liked the breadth of the engineering program and the opportunities associated with it." Even if you're not sure what you want to study yet, its undergrads feel that the university has "an amazing reputation and strong programs in many different majors, and that if I needed to change majors (which I ended up doing) I would still be getting a great degree."