However, Reuters reported in June that, to date, Chinese prosecutors have joined an official inquiry into ten collapsed schools during May's devastating earthquake <answer>to gain first-hand material of construction quality</answer> at the collapsed schools, launch preliminary inquiries and prepare for possible investigations into professional crime. It was also reported that safety checks were to be carried out at schools across China after last month's earthquake.
Why were the schools inspected?
to gain first-hand material of construction quality