The NY Times reports,

After her family moved to this small town 30 years ago, Mona Dobrich grew up as the only Jew in school. Mrs. Dobrich, 39, married a local man, bought the house behind her parents’ home and brought up her two children as Jews.
For years, she and her daughter, Samantha, listened to Christian prayers at public school potlucks, award dinners and parent-teacher group meetings, she said. But at Samantha’s high school graduation in June 2004, a minister’s prayer proclaiming Jesus as the only way to the truth nudged Mrs. Dobrich to act.
“It was as if no matter how much hard work, no matter how good a person you are, the only way you’ll ever be anything is through Jesus Christ,” Mrs. Dobrich said. “He said those words, and I saw Sam’s head snap and her start looking around, like, ‘Where’s my mom? Where’s my mom?’ And all I wanted to do was run up and take her in my arms.”
[…] “Because Jesus Christ is my Lord and Savior, I will speak out for him,” said the Rev. Jerry Fike of Mount Olivet Brethren Church, who gave the prayer at Samantha’s graduation. “The Bible encourages that.” Mr. Fike continued: “Ultimately, he is the one I have to please. If doing that places me at odds with the law of the land, I still have to follow him.”
Mrs. Dobrich, who is Orthodox, said that when she was a girl, Christians here had treated her faith with respectful interest. Now, she said, her son was ridiculed in school for wearing his yarmulke. She described a classmate of his drawing a picture of a pathway to heaven for everyone except “Alex the Jew.”

Full story.
I sued my high school for similar reasons in 1997 and won.