Cimorene

I think the repetition of easy to follow facts for the kids that the teacher can't argue with might be the least rage-inducing for you. I'd also go with "the Romans killed him" with a side order of "Pontius Pilate was a Roman" and "crucifixion was for political crimes". And if the teacher says something about Jesus being sent to Herod to (a) repeat he was killed by the Romans and (b) arrested and killed in Judea (under direct Roman rule by Pilate as procurator), not Galilee (under the rule of Herod Antipas, the ethnarch - not king). And to keep repeating that all the gospels agree on Jesus' death in Judea/under Roman law as adminstered by Pilate, not Galilee/under Herod's law. If she wants to take the sources literally she should at least know what they say.