You just may have an Indiana Jones sitting right in your classroom. First, with the cooperation of a museum, research center, university, etc., we create a simulated dig site. Then the teacher decides when and what dig their class will attend. The teachers then educate their students on archaeology and the dig they'll all be attending. Everyone shows up at the site.
Qualified folk guide the students through their on-site archaeology adventure.
The students use the standard tools and methodology of archaeology. They notate and map their progress and finds. Everyone is now wonderfully dirty. Back at school, the teacher guides the class through the process of combining the datum they've gathered and creating archaeological site reports. See the Adventure Digs area for student journals.