WEST PALM BEACH, Fla. — New civics training for Florida public school teachers comes with a dose of Christian dogma, some teachers say, and they worry that it also sanitizes history and promotes inaccuracies.

Included in the training is the statement that it is a “misconception” that “the Founders desired strict separation of church and state.”

Other materials included fragments of statements that were “cherry-picked” to present a more conservative view of American history, some attendees said. In a possible effort to inoculate some Founding Fathers against contemporary political complaints, some slides in a presentation pointed out that George Washington and Thomas Jefferson repudiated slavery; unsaid is that both men held enslaved people and helped worked toward a Constitution that enshrined the practice...