My two cents. Saw it yesterday. Better than I expected, but not great.
There is a graphic battle scene in the beginning, the cross scene and gross views of decomposing corpses (they dig up graves trying to find Jesus whom they believe was buried by members of the Sanhedrin).
I turned my head away several times because I don’t like graphic violence. I would say a child 10 and older would be okay with that level of violence, but not younger than that.
It’s quite slow moving after the first 10-15 minutes and the story line would be hard to follow (there were parts I couldn’t understand at all because of the British accents) unless you are very familiar with the Bible accounts, so I think a child would be very bored. I found myself about to nod off several times because the pace was slow.
My recommendation - go and see it yourself and if you think it’s appropriate, watch it with your kids later at home where you would be able to pause it and explain what was happening.
Or just skip seeing it in the theater and watch it at home all together.
“...unless you are familiar with the Biblical accounts.†By the time I was 11 I had read the Bible and knew the story from Sunday School. Why crucifixes are better than plain crosses in telling the Bible story.