Pretty much anybody can get in, but that is because they want to give people a chance. If you get an F in two consecutive semesters you will be dropped. Likewise if you are lagging behind and miss too many classes you will be dropped. The best reccommendation is to simply keep communication with your professors, especially when you have problems.
I am an older student who transferred to DCC to gain a better understanding of my relationship with Christ, to learn how to serve Him better, hopefully by continuing my life-long goal of learning as much as I can about literature and theology, and the inter-relationship between the two.
If you wish to further your education, consider one of the many options available through online degrees. Browse a wide range of online college and university programs and find the perfect degree for you.