A controversial author, who was recently banned from entering the United Kingdom, is among the guest speakers at a conference being put on by the Napa-based Kolbe Academy Home School.

Robert Spencer served as the director of Kolbe Academy's national home-school program in the 1990s. He also taught high school history, literature and religion at the Napa campus.

The Kolbe Academy Home School program is a separate legal entity, with separate management, from Kolbe Academy & Trinity Prep — the pre-K-12 school located off Redwood Road.

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