It probably doesn't show because when your on EDUNAV you don't have all school clicked when you search NXN-84. I don't think all schools offer it. Don't quote me but I think its only available at Riverside campus not Norco or MVC but again, I'm not 100% on that. You should double check EDUNAV. I haven't take it, I'm currently enrolled to take in for FALL at RCC. So for FALL I'm taking NXN-84, Bio-55, and Kin-4. I don't think NXN-84 will be difficult its more of a preparation for nursing school type class. I think CHE-2A, and Bio-55, and MAT-12 are the hardest of everything we have to take.