While the vast majority of Christian colleges are private, there are a few that are publicly funded, although they are less common and their level of public funding can vary. These are typically located in states with a history of strong ties to particular denominations. It's important to note that even publicly funded institutions with a Christian affiliation often maintain significant independence in their religious governance and curriculum. They aren't necessarily "public" in the same way a state university is completely secular in its operations.
Therefore, the answer is a qualified yes, but they are rare exceptions rather than the rule.