Lavender was let go Monday, two days after the Wildcats finished a disappointing 2011-12 campaign. Picked to finish fifth in the revamped Lone Star Conference, the Wildcats ended up 7-13 in league play, which left them 10th in the 11-team league.
The Wildcats were a combined 23-30 overall and 15-19 in league play the last two seasons. Under Lavender's direction, the Wildcats reached the LSC Post-Season Tournament seven times and the NCAA Division II South Central Region Tournament twice. However, the Wildcats were just 3-7 in LSC tournament play and 0-2 in regional play.
"This is a tough decision personally because of my respect for Shawna both as a coach and as a friend," Mosley said. "She has had a tremendous impact on the young women who have come through our program during her time at ACU, and I have great deal of admiration for the role she's played in developing those young people.
"Ultimately, however, I believe we've reached a point in our program where we need a change of direction." he said. "We just haven't been able to reach the competitive level that we desire , and I believe we need to begin the process of making that happen."
Mosley said a national search for Lavender's replacement would begin immediately, but set no timetable for an announcement of a new coach.
Lavender leaves ACU with an overall record of 149-111 (.573 winning percentage) and those post-season appearances in nine full seasons.
She took over the Wildcat program with six games left in the 2002-03 season and led the team to a 5-1 record, narrowly missing the conference tournament.
That late-season momentum, however, carried over to the 2003-04 season, which saw the Wildcats finish 19-10 overall and second in the LSC South Division and reach the LSC Post-Season Tournament semifinals.
In 2004-05, ACU finished third in the LSC South Division, reached the LSC Tournament semifinals for the second straight season and earned a berth in the NCAA Regional tournament. ACU also posted 20 wins, the first time the program had posted a 20-win season since the 1998-99 campaign.
After a rebuilding season in 2005-06, the Wildcats rebounded in 2006-07 to finish 17-12 and reach the LSC Post-Season Tournament quarterfinals. In 2007-08, the Wildcats finished 18-11 overall and reached the LSC Post-Season Tournament semifinals.
The Wildcats finished 18-11 in 2008-09, but qualified for the NCAA Division II South Central Region Tournament for the first time since 2004-05.
The 2009-10 season saw Lavender lead the Wildcats to a 17-11 finish and fourth place finish in the Lone Star Conference South Division earning a berth in the LSC Post-Season Tournament for the fourth consecutive year. ACU got into the tournament with a win on the final day of the regular season at two-time defending champion West Texas A&M.
The win in Canyon was the first since the 2003 season and Lavender's Wildcats swept the Lady Buffs for the first time since the 1980-81 season. However, the Wildcats post-season run was cut short with a memorable triple overtime loss to Central Oklahoma in Bartlesville, Okla.
Lavender joined the coaching staff in July 1997 as a graduate assistant, and was then named a full-time assistant coach in spring 1999.
Lavender, a 1997 graduate of SMU, was a four-year letterwinner and led the Mustangs to a combined 78-40 record with two NCAA Division I tournament appearances. She scored a career-high 42 points in SMU's quadruple-overtime victory over TCU in 1997.
Lavender missed the 1995-96 season with a knee injury, but came back to start all 30 games in 1996-97 and average 10.4 points per game and rank fifth in the Western Athletic Conference in assists.
A two-time team captain, Lavender received a bachelor's degree in English from SMU and a master's in education from ACU. She was a Class 5A all-state selection from Georgetown High School and led GHS to a 63-8 record in her last two years after moving from Westwood High School in Round Rock. Lavender also played in the 1992 Texas high school girls' coaches' all-star game.