It’s very unusual among the kind of people who staff the admissions departments of selective colleges though.
37% of professors at elite universities are atheist or agnostic. Saying Harvard is friendly to the religious because it has a divinity school is like saying Stanford is a hotbed of the rightwing because of the Hoover Institution, except that you would expect a lot of atheists and agnostics at Harvard’s divinity school and no Marxists at Hoover.
I sometimes wonder if the US is less secular than Europe because atheists were for a long time associated with communists. Church going people obviously couldn't be communists.