On December 29, Parker returned to action for Naperville Central and a few months later, led her team to its second consecutive state title. In August 2004, Parker led the undefeated USA Junior World Championship team to a gold medal with 16.6 points and 8.8 rebounds per game.
On March 29, 2004, Parker won the slam dunk contest at Mc Donald's All-American Game, becoming the first female to win the event and beating the likes of Josh Smith and J. While training, Parker had a relapse of knee pain and was required to undergo surgery both the lateral meniscus and the lateral articular cartilage in her left knee.
She is the only two-time award winner of the USA Today High School Player of the Year, winning the award in 20.
Parker also won the Naismith Prep Player of the Year Award and Gatorade Female Basketball Player of the Year Award in 20.
Parker announced on February 21, 2008, that she would forgo her final season of eligibility at Tennessee in order to focus on the 2008 Olympics and pursue a professional career in basketball. A sports management major who had a 3.35 grade-point average as of December 2007, she was named University Division I Academic All-American of the Year in women's basketball for 2008 by the College Sports Information Directors of America.
She participated in the 2004 WCBA All-America Game where she scored 9 points.Her whole family loved basketball, and she began playing at an early age.Her father played basketball at the University of Iowa in the 1970s.She was the SEC Rookie of the Year (Coaches and AP) and helped the Lady Vols win the 2006 SEC tournament championship.With 17 seconds remaining in the SEC tournament championship game against LSU, Parker hit the game-winning shot.