Six students will be honored with achievement medals during the University of Arizona's 140th Commencement ceremony for undergraduate students at 9 a.m. May 15 at McKale Memorial Center.

Alexandra Keffeler, Zachary Ronan, Alison Lucht, Donnie Zacharias, Mary Garcia and Timothy Malan will be honored with medals for their scholastic ability, citizenship, leadership and promise for the future.

Freeman Medals, Robie Medals and Nugent Awards recognize students who come from diverse backgrounds and studies but are similar in their dedicated contributions to University, local or global need.

Robie Gold Medal honoree Zachary Ronan will graduate with honors and receive a Bachelor of Science in chemical engineering from the College of Engineering with minors in general business administration and pre-health thematic.

Ronan's exemplary academic record and involvement at the UA has earned him the Arizona Presidents Award for Excellence scholarship, Conrad L. Fraps Memorial Scholarship, Harriet M. Tucker Scholarship, Arizona Leadership Enrichment Certificate and the College of Engineering Award for Highest Academic Distinction.