We're Growing. New Teacher Positions Available. Instill knowledge, strengthen character, and nurture the Spirit through key teaching positions at. Lumen Christi Catholic High School. in Anchorage, Alaska. Accredited by Cognia, Lumen Christi has been serving students in grades 7-12 for nearly 30 years. With a growing student population, Lumen Christi is seeking highly qualified applicants to fill full-time teaching positions in junior high and hig...