Goofs

18 players start lined up for dodge ball, but by the end of the game their numbers are reduced to 11 left standing, without explanation of where the others went meantime.

After the dodge ball death scene, during the funeral the viewer sees four of the boys acting as pallbearers to bring the casket to the gravesite. In real life there is no way only four young men of their size could carry a casket with a body in it due to the immense weight. Modern caskets weigh usually 160-200+ pounds on their own and with a body could easily weigh 350+ pounds, with each pallbearer carrying their share of the weight on only one arm and at a low height, hence why funeral homes often provide at least two employees (to make six pallbearers) with the strength to help the pallbearers ensure the casket isn't dropped. One almost never sees fewer than six pallbearers for these reasons.

After the stigmata catastrophe, attendees are seen scrambling over fences to get away, even though there's a gap in the fence big enough to drive a mac truck through--or at least a police car, which does.

Despite her fears, Brenda waits a full 5 seconds before she notices a zombie fondling her ankle and screams.

Mr. Williams' postal uniform has a name patch sewn on that reads "Lester Carpenter".

The triumvirate of archangels are the forces of good against evil. According to religious doctrine, they are sexless, as are all divine beings, but, because of patriarchal bias, they are referred to as male. Here, however, two of them, Gabriel and Michael, are incarnated in mortal form as females. As Gabriel takes the feminine name Gabrielle, it would follow that Michael would also be feminized, but his character as a woman is named Mikhail, Russian for Michael, not the feminine Mikhaila.