Slayton Alvin Evans Jr. was born on May 17, 1943, in Chicago, Illinois, to Corine M. Thompson Evans and Slayton A. Evans, Sr. Evans helped pay for his school tuition by mowing lawns and during eighth grade he was a junior assistant janitor at his elementary school. Later he worked in the high school cafeteria. In his third year of high school, he considered going into the
Air Force, but was too tall for flight training. However, he took several competitive examinations and was the recipient of an academic scholarship to
Tougaloo College where he also received an athletic scholarship for basketball. He enrolled at Tougaloo in 1961. By the end of his first year, Evans had top marks in chemistry in his class. He got a summer job working for the pharmaceutical company
Abbott Laboratories in Chicago where he was tasked first with creating chemical compounds from raw materials, and later with identifying the stages of chemical reactions. Evans graduated from Tougaloo with a Bachelor of Science in chemistry in 1965. Evans was encouraged to attend graduate school, though he didn't know how to pay for it. He briefly attended the
Illinois Institute of Technology before transferring to
Case Western Reserve University in Cleveland, Ohio, where he was offered a research assistant position in the chemistry department. In his first year, he received a draft notice to go to the
Vietnam War. University officials contacted the draft board and explained that Evans' research was crucial to the war effort. He was researching a medicine to treat
schistosomiasis, a disease caused by parasitic flatworms that are common in Southeast Asia. He completed his coursework in 1969 and received his Ph.D. in chemistry in early 1970. ==Research and academic career==