As part of a wide-ranging phenomenographic study of computing teachers, we explored their varying understandings of the lab practical class and discovered four distinct categories of description of lab practicals. We consider which of these categories appear comparable with nonlecture classes in other disciplines, and which appear distinctive to computing. An awareness of this range of approaches to conducting practical lab classes will better enable academics to consider which is best suited to their own purposes when designing courses. Key words: computing education, phenomenography, lab practical class.