That is a concern for many Creationists in university.
From the reports that I have done so far, they don’t ask whether you believe any of the theories and concepts. They simply ask what conclusions can be drawn from a collection of data.
My Buddhist friend in secondary school disagreed with many things we were taught, yet he always had good grades (much better than me, that’s for sure). When I asked, he said that he always wrote what the teachers or examiners wanted to hear. Just because he wrote it down didn’t mean he believed any of it.
And God knows what’s going on. It’s not a black and white situation. If I am to progress in my studies and eventually become a respected geologist, I will need to keep my head down for a while and sometimes face difficult situations. In this day and age, there is no other alternative not because it is morally wrong to have my beliefs, but because the majority of the establishment believe it to be. I will do my best at word games to avoid answering certain questions, but God will know that I’m not doing it for my own personal gain, like intellectual pride. I wish to inspire others, and to teach them about God’s Works. Only God can bring good out of this situation.
Many Christians were martyred for their Faith, but not all of them. Some wormed their way around the situation without outright lying. And that is the only way to get around this problem unfortunately.
