As a freshman, Koprivica appeared in 15 games at Washington State University in their 2006–07 season. He made the first career start against the San Diego State on December 21, 2006. Seven days later, on December 28, he scored season/career-high 12 points against the UCLA. As a sophomore, Koprivica appeared in 34 of 35 games in the Cougars' 2007–08 season. On December 9, 2007, he tied career-high 12 points in 19 minutes knocking down 5-of-6 from the field against Portland State. On March 20, 2008, he played seven minutes in his NCAA Tournament debut against Winthrop. He earned Pacific-10 Conference men's basketball All-Academic Second team. As a junior, Koprivica appeared in all 33 games, including 18 starts, in the Cougars' 2008–09 season where he played with the future NBA All-Star Klay Thompson. On November 8, 2008, he pulled down career-high eight rebounds in season-opener against Mississippi Valley State. On February 7, 2009, he dished out career-high five assists against California. At the end of the season, he was selected for the first time to Pacific-10 Conference All-Academic First team. As a senior, Koprivica appeared in all 31 games, including 10 starts in the Cougars' 2009–10 season. He was ranked third on the team and 15th in the Pac-10 with 5.1 rebounds per game. He led team and ranked third in the conference with a.426 for 3-point field goal percentage. On December 2, 2009, he contributed eight points, four rebounds, and four assists at lost from Gonzaga. On December 2, he tied a career high with 11 rebounds against Air Force. He scored a career high 23 points against Portland State on December 19. At the end of the season, he was selected for the second time to Pacific-10 Conference All-Academic First team. Koprivica ended his college career with 85 wins, ranking as the second winningest player in the school history.
Koprivica began his coaching career in 2011 at the AS Basket from Belgrade. In July 2014, he became an assistant coach for the Truman Bulldogs of the Great Lakes Valley Conference. Truman's head coach Matt Woodley was a member of coaching staff for the Washington State while Koprivica played there.
Personal life
Koprivica, was born in Belgrade, SR Serbia, SFR Yugoslavia, to former basketball player Žarko Koprivica, who played for the Crvena zvezda. Nikola's mother is Marija. His older brother, Jovan, played basketball for Crvena zvezda and OKK Beograd and has played in the Greece and Ukraine. Koprivica is married with Vedrana Grbović. Vedrana was Miss Serbia in 2006 and represented Serbia in Miss World 2006. Koprivica earned his bachelor's degree in international business and entrepreneurship from the Washington State University in 2010 and earned his master's degree in leadership, business administration and management from the Truman State University in 2016.