During his tenure, Donaldson was instrumental in advancing the educational methods and curriculum at Menaul, including coeducational programs that began in 1934.

As New Mexico grew in population and diversity, Menaul School underwent a shift towards serving a broader demographic, including international students.

The school's historical significance is preserved within its campus, notably at the Menaul Historical Library of the Southwest, which houses extensive archives relating to the school and the broader Presbyterian education and healthcare movement in the southwestern United States, including many of the founding documents of Presbyterian Healthcare Services.

[9] Menaul School is situated on a historic campus in the center of Albuquerque, spanning 28 acres and featuring New Mexico's largest collection of Mission Revival buildings.

Many of the older buildings on Menaul School's campus were built of adobe and Sandia mountain stone by students and faculty.

[10] Menaul School provides a college-preparatory curriculum aimed at preparing students for higher education and subsequent careers.

As an independent, coeducational day-and-boarding school, it incorporates a comprehensive educational approach that combines intellectual, moral, and spiritual development suitable for both domestic and international students from more than 20 countries.

[29] Mission Week takes place each spring and the work Menaul School students undertake is regularly featured by the Presbyterian Church in its national publications.

[30] At the commencement ceremony, graduating seniors may share the stage and be handed their diploma by Menaul School alumni family members.