Eino Saari has been characterised as being the founder of Finnish agricultural sciences. For decades, he developed Finnish university education in the field.

Saari was also an internationally known forest researcher who made dozens of trips to Europe, the United States, India and Africa. Among other things, Saari worked as an expert in forest policy for the Paraguayan government and as a visiting professor in Oregon.

Saari worked as a part-time teacher of forest policy at the School of Social Sciences from 1928 to 1938. Saari later became the longest-standing chancellor of the School of Social Sciences and the University of Tampere, serving in the position for a total of five three-year terms.