A New Hampshire court ordered a home-schooled Christian girl to attend a public school this week after a judge criticized the "rigidity" of her mother's religious views and said the 10-year-old needed to consider other worldviews as she matures.

Ever since the judge's ruling came out in July, the case has aroused the interest of home-schooling groups nationwide, whohave asked why a court has the power to decide whether someone's religious views are too extreme.

The girl's mother, Brenda Voydatch, has engaged the Alliance Defense Fund, a Christian legal group based in Scottsdale, Ariz., to contest the ruling, in which the judge granted a request by the girl's father, Martin Kurowski, that the girl go to a public school...