The Viking provides a unique experience for your students, where no two rockets will come out alike. With the wide range of fin configurations, the Viking allows students to decide for themselves which is likely to provide the most altitude.
Where the Viking really shines is with drag comparison. Because it can be built with a wide variety of fin configurations, each rocket from your classroom is likely to perform differently. It gives students the ability to decide for themselves what is likely to perform the best, build it the way they want, and then test their hypothesis during the launch.