After his playing career, Shrewsberry had assistant coaching stops at
Wabash and
DePauw before joining the coaching staff at
Marshall for two seasons under
Ron Jirsa. In 2005,
Indiana University South Bend named Shrewsberry their head coach. He served until 2007, when he joined
Brad Stevens' staff at
Butler. He reunited with Stevens in the NBA ranks, joining the
Boston Celtics coaching staff, helping the Celtics to five playoff appearances, including back-to-back Eastern Conference finals. On May 9, 2019, Shrewsberry returned to Purdue as an associate head coach.
Penn State On March 15, 2021,
Penn State named Shrewsberry as the 14th head coach in program history. In just his second season coaching the Nittany Lions, Shrewsberry led the team to a 23–14 record, which saw it finish as runner-up to
Purdue in the
B1G Tournament and earn its first
NCAA Tournament appearance since 2011, where it defeated
Texas A&M in the first round and narrowly lost to #2-seed
Texas in the round of 32, 71–66. The victory over Texas A&M was Penn State's first NCAA Tournament win since 2001. The team set a B1G record for most 3-pointers made in a season and star guard,
Jalen Pickett, earned second team All-America honors, the first Nittany Lion to do so since 1954. On January 2, 2026, Shrewsbury chased after an official and had to be restrained by Notre Dame forward Matthew MacLellan following a 72-71 loss to Cal. ==Personal life==