Much of the content on this website has been specially tailored for a secondary school audience. It aims to teach students about the process of archaeology and about the Geometric settlement of Zagora (c 900-700 BCE) on the Greek Aegean island of Andros.
Would be an excellent student activity if you lived in a country with a significant and extant material history. You register with this network and nominate run-down buildings that you and your students can then restore, under the guidance of these volunteers. I guess there are some ethical problems there, but it would still be a wonderful experience for the students.