He is best known as manager of the Norway national football team 1974–1977, together with Nils Arne Eggen.
In 1977, Norway came close to qualifying for a finals for the first time since the war.
After his time as national manager, Schou-Andreassen was coach of Bryne FK (1977–79) and Lillestrøm Sportsklubb where he took over from Joe Hooley and finished 2nd in the Norwegian Football Cup 1980 and won the Norwegian Football Cup 1981.
Eggen said that Schou Andreassen was the man who best represented Norwegian football for him.
[2] For 15 years, Schou-Andreassen managed at the top-level of Norwegian football.