Robert Maranto describes a scenario wherein a grad school applicant is mocked for her Christian beliefs and observes that such mockery would be unacceptable if targeted at a racial or religious minority.
Compared to racial and gender discrimination, this kind of religious discrimination gets little attention from researchers. Professors do not find the topic interesting, which itself is telling. Yet the extant research findings are concerning.Back in the 1980s, J.D. Gartner found Christianity reduced the chances of admission to psychology doctoral programs. Using 1999 data, "The Still Divided Academy" by Stanley Rothman, April Kelly-Woessner, and Matthew Woessner offered strong statistical evidence that (typically religious) socially conservative professors must publish more to get the same academic posts.
More recently, George Yancey's "Compromising Scholarship" showed that in many academic fields, significant numbers of professors, more than enough to blackball hiring decisions, express reluctance to hire evangelical and fundamentalist Christians.
None of this makes secular professors bad people. As psychologists William O'Donohue and Richard E. Redding argue, people generally express willingness to discriminate against those of other political or religious ideals. The danger comes when individual institutions lack ideological diversity, enabling an arrogant tendency to dismiss dissenters as unacceptable people with unacceptable opinions.
It's easy to lose sight of the fact that, other than Jews, Christians have been the most persecuted people on the planet for 2,000 years.