Colorado State University is a small campus with small classes. Due to the class sizes, professors are able to help students individually. Also, the University makes it a point for students to do well. Professors take time to make sure students will pass the class by providing extra assignments, extra credit, or personal study time (depending on the professor). Also, the campus has a tutoring center that helps students study a certain topic or review papers.
The workload at CSU-P is not overwhelming. Of course, if you take harder classes, you will have more work, but most students don’t have a problem. Although the class workload is manageable, the class schedules are often not ideal. Based on the small population of students, most likely you will not get the classes you want to take in the order and times you want to take them. They only offer certain classes certain semesters, so you will have to set up your schedule accordingly. Also, yes, the advisers are helpful, but it is very important that you do your own research with your classes and what you need to take in order to graduate. Just like with every other university, they will tell you something different every time you see them.