Mother Mary Lange Catholic School is accredited through Cognia.
In addition, every five years, Mother Mary Lange is evaluated based on the National Standards and Benchmarks for Effective Catholic Elementary and Secondary Schools (NSBECS). The NSBECS is intended to describe how the most mission-driven, program effective, well managed, and responsibly governed Catholic schools operate. They are offered as school effectiveness standards rather than curriculum content standards, although they support curriculum development consistent with national curriculum standards. These standards and benchmarks can be found at http://www.catholicschoolstandards.org.