<p>The sequence of courses is often problematic to finish in four years. Despite a lot of AP credit, son had to attend summer school to take chemistry, since it was a prereq for the next year’s engineering course. He will hopefully graduate in four years, though scheduling conflicts caused him to have to take some senior level classes in his third year, and he had a hard time handling them. Lowered his GPA, but he should still be on track to graduate in four years. Despite the length of time added by a co-op, I would definitely try for that, as getting summer internships is very tough, and if you can get a co-op through your school, you have a better chance of getting a job upon graduation.</p>