Considering the fact that the Chamber of Secrets is one of the greatest secrets of Hogwarts and Harry killed a basilisk inside the Chamber of Secrets, one wonders why Dumbledore or other teachers did not use Harry to explore the Chamber of Secrets and/or the dead basilisk?

Edit : We know they did not open it again since 5 years later Ron and Hermione opened the Chamber and the dead basilisk was still there untouched.