Portland Lutheran School was a private Lutheran school in Portland, Oregon, United States. It had been accredited by the Northwest Association of Accredited Schools since 1948. The school permanently closed in 2015 The school was originally part of Concordia College, which was founded in 1905. In 1977, the high school was separated from the college and named Portland Lutheran High School. In 1986, classes for pre-K through 8th grade were added, and the name was changed to Portland Lutheran School.