While the short-live ceasefire was in effect, the United Nations went into Gaza and ended up confirming one of Israel’s claims, that Hamas does indeed store rockets in school buildings:
DC EXAMINER – A United Nations agency, over the course of doing relief work on Wednesday, found rockets being stored in one of its schools in Gaza, providing further evidence of Israel’s claims that Palestinian terrorists have been using civilian areas to store and fire rockets.
“[I]n the course of the regular inspection of its premises, UNRWA discovered approximately 20 rockets hidden in a vacant school in the Gaza Strip,” read a statement released by the United Nations Relief and Works Agency. “UNRWA strongly condemns the group or groups responsible for placing the weapons in one of its installations. This is a flagrant violation of the inviolability of its premises under international law. This incident, which is the first of its kind in Gaza, endangered civilians including staff and put at risk UNRWA’s vital mission to assist and protect Palestine refugees in Gaza.”