Students sometime have problems registering for CS 156. CS 156 has two prerequisites (requirements):

- CS 155 or concurrent registration
- MATH 118

You must get at least a D- (high standards, indeed) in CS 155 to take CS 156. If you get an F in CS 155, then you can’t take CS 156. After we grade the CS 155 final exams and compute CS 155 grades, we will drop you from CS 156 if you failed CS 155. Unfortunately, this doesn’t happen until a few days into CS 156, so students who may have failed CS 155 have to endure a CS 156 class or two before they know if they’re eligible to continue with CS 156.

CS 155, CS 156, and CS157 are taught one after the other. CS155 is the first five weeks of the semester, CS156 is the second five weeks, and CS157 is the last five weeks of the semester.

What does “or concurrent registration” mean? “Concurrent” means “at the
same time”. “Concurrent registration” means that you can register for
both CS 155 and CS 156 at the same time. You don’t have to finish
CS 155 before you *register* for CS 156. If you’ve registered for CS
155, then you can register for CS 156, even if you haven’t taken CS 155
yet.

This means that you have to finish MATH 118 before you can start CS 155.
This means **exactly** MATH 118—not any other math course. If you
took an equivalent Algebra II class in high school, that’s great, but
the registration computer doesn’t recognize that as being good enough.
Similarly, if you persuaded the Math department to let you skip MATH 118
and go directly to MATH 987, good for you, but the registration computer
doesn’t recognize that as satisfying the requirement.

Say, for example, that you’ve taken a math course that’s much better than MATH 118, and you’d like to register for CS 156. To do that, send email to the CS 156 instructor, asking for an override. Make sure to mention in your email:

- What semester you’re talking about
- Your CSUID (a nine-digit number that starts with 8)
- What prerequisite you’re missing.
- Why you think it shouldn’t apply to you.

You might send something like this to the course instructor:

Dear CS 156 Instructor,

I am Max Q. Student (CSUID 812345678). I’m trying to register for CS 156 this Fall, but I can’t, because I didn’t take MATH 118. However, I’m a Math major, and so I’ve taken MATH 789, which covers everything that MATH 118 does, and more. May I please have an override so that I can register for CS 156?

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Colorado State University, Fort Collins, CO 80523 USA

© 2018 Colorado State University