Trillium Charter School was a K–12 school located in Portland, Oregon, United States.

The school had failed to provide accurate financial statements and had failed to meet an improvement plan to increase academic competence.

[6] Of 20 students, 11 graduated, five dropped out, and four were still in high school the following year.

[7] In 2016, 70% of Trillium's students graduated on time out of a class size of 23.

This Oregon-related article is a stub.