In a city full of colleges and in an economy increasingly perilous for small schools, one wealthy businessman is making an unlikely investment. Next fall he will open a college in Boston geared toward conservative Christian students, using an innovative model that incorporates online learning.

Sattler College, named after a 16th century martyr, will be entirely funded by Finny Kuruvilla, an investment fund manager with a medical degree and a PhD from Harvard. He has guaranteed $30 million of his money to fund the school.

In his view, the traditional college model is broken. The new four-year school is his attempt to start from a blank slate. He said his goals are threefold: to teach a strong core of liberal arts courses, provide students with a Christian community, and keep the cost extremely low. Tuition will be $9,000 per year, about a fifth of the cost of a typical private college.