Melanie Griffith, who had a small uncredited role, met Don Johnson on the set of this film when it began filming in February 1972. The then 14-year-old Griffith and the 22-year-old Johnson began dating and later got married in January 1976, when Griffith was 18-years-old. The marriage only lasted six months, though they got remarried in 1989. Their second marriage lasted seven years.
To the chagrin of the producers and the director, the marijuana plants in the picture turned out to be real. The property master denied any culpability, leaving the producer to conclude that one of the actors must have made a last-minute substitute.
The mythical Harrad College, was taken as a conjunction of Harvard (at the time early 1970's a predominantly Male college) and Radcliffe, a women's college. Hence the conjunctive:(HAR-RAD).
Don Johnson sings the ending song, "It's Not Over." The producer, Dennis F. Stevens, plays the flugelhorn solo, overdubbing himself.