Tonya,
Teaching classes online can be much more challenging, but just as effective. If converting a "ground" course to online, it is vital to analyze what in that course makes it the quality course it is, and then explore and select online tools that allow that traditional course to be just as effective online. You are correct, online courses do take more time to manage than traditional courses. It is important not only for instructor to realize this, but also for adminstration to take this in to consideration when planning workloads, etc.
Herbert Brown III