<p>You need to start doing research on the Illinois site to evaluate your possibilities. For example, here are the requirements and recommended semester schedules for a CS major in engineering: [Course</a> Information Suite, Course Catalog, Class Schedule, Programs of Study, General Education Requirements, GenEd](<a href=“http://provost.illinois.edu/ProgramsOfStudy/2011/fall/programs/undergrad/engin/comp_sci.html]Course”>http://provost.illinois.edu/ProgramsOfStudy/2011/fall/programs/undergrad/engin/comp_sci.html)</p>
<p>Also, here are courses for which you can receive college credit for AP scores: [U</a> of I Admissions: Advanced Placement](<a href=“http://admissions.illinois.edu/academics/placement_AP.html]U”>Academics, Undergraduate Admissions, University of Illinois Urbana-Champaign).</p>
<p>If you start exploring, you will start finding a lot of helpful information, including what a credit hour is and how many are needed for graduation. If you have a three credit hour course, that usually means you attend class three hours per week during the semester. However, for certain courses including a number of science and engineering courses and labs, the number of hours per week can actually be significantly higher. For example, the typical first two calculus based physics courses that you take get you four hours of semester credit but you are actually in class 7 hours a week because of lecture, lab and a small group or quiz section. As a freshman, you are not allowed to take more than 18 hours in a semester without special permission, which is not likely to be granted for a freshman. Science, math and CS courses can be very time consuming as far as homework is concerned.</p>