A four-year letter winner at Penn State, Johnson led the Nittany Lions in scoring as a junior (73 pts) and a senior (70 pts). She also recorded a team-high 49 goals in 1998 and led again in 1999 with 47 goals. Johnson finished her career ranked among the top 10 all-time at Penn State in goals scored (136), assists (64) and overall points (200). The team’s captain as a senior, she received first-team All-America honors after leading the squad to a 15-5 overall record and a trip to the NCAA Tournament, advancing to the semifinals. Johnson received second-team honors in 1998 and third-team honors in 1997, and was a first-team regional All-America pick three straight years. In her four years at Penn State, Johnson never missed a game, and she completed her collegiate career with a trip to the prestigious North/South All-Star game in May 1999.
In 2001, she led the Canadian Women’s Lacrosse National Team to a fourth-place finish in the 2001 IFWLA World Cup in England and finished in the top three in scoring in the tournament.
In 2005, Johnson was named to the IFWLA World Cup All-World Team after leading Canada to a fourth place finish (out of 10 teams) at the 2005 IFWLA World Cup. Johnson was one of three attackers and the only representative of Canada named to the 12-player squad. She finished the tournament ranking among the leaders in points (20), assists (8), draw controls (18) and led all players in ground balls (28) and caused turnovers (11).
In the quarterfinal round, Johnson scored what proved to be the game-winning goal to lead Canada past Japan, 13-11, in a comeback victory. Johnson’s best game of the World Cup came in a 17-7 victory over Scotland. She registered five goals, handed out two assists and collected six ground balls to earn Player of the Match honors.
Johnson is one of the few Canadian players to also serve as a coach in the IFWLA World Cup. From March of 2006 until July of 2007, Johnson directed the Canadian U19 National Team. She led Team Canada to a fourth place finish at the 2007 World Cup hosted in Peterbourough, Ontario. Johnson led Canada to a victory over Australia in the round-robin tournament play. It was the first victory by a Canadian team, at any level in a world cup event, over the Australians. Four players from the Canadian team were named to the IFWLA All-World team, including Vermont’s Kristen Millar.
In July of 2009, Johnson competed in her fourth FIL Women’s Lacrosse World Cup. The 2009 World Cup was held in Prague, Czech Republic and Johnson captained the Irish National Team. She led Team Ireland to a fifth place finish in its first-ever World Cup competition. Johnson handed out a team-high 16 assists for Ireland. Her best game of the tournament was a three goal, three assist performance to propel Ireland past Japan, 15-13, and into the fifth/sixth-place game. She added two goals and an assist in a 12-7 victory over Wales to secure fifth place.
Johnson was one of 40 players selected to compete in the first-ever professional women’s lacrosse game in Boston in July of 2002, and was a co-captain of the Canadian Under-19 National Team that finished fourth in the 1995 World Cup.