All the intrigue, mystery and excitement of an actual case arrives at your school with The Lois McArthur Mystery in a cost-effective way! A single scenario that relates biology, chemistry and physics tools to criminal investigations. Each student in three classes of 24 will be able to conduct the following tests: Blood analysis, fiber analysis, fingerprints, and handwriting analysis. These kits are meant to serve three classes of 24 students working in pairs. It is not unusual for teachers to be able to expand that to four classes if they are careful with the materials provided. How does this compare to our other Crime Scene Kits?