Hamas does not use women and children as "human shields." That would be bank robbers or the like holding civilian hostages in front of them when trying to escape from police or something similar.
Hamas stays close to civilians when attacking Israel so that civilians will be killed in the retaliatory strikes. When this inevitably happens it results in big public relations victories for Hamas, as in the present instance. It is not for protection, it is outright murder by Hamas. Israel's cooperation in this plan is predictable, almost to the minute. Israel killing the civilians is the goal of the enterprise. Extra points for U.N. schools and hospitals!
It works every time.