Bachelor of Arts degree in philosophy from Rice University in 1975 and her Juris Doctor degree from Southern Methodist University School of Law in 1978.
Sharon Keller was first elected to the Texas Court of Criminal Appeals in 1994. She was elected Presiding Judge in 2000 and she has thrice been re-elected to that position. She is the first woman to have served on the Court.
Presiding Judge Keller is chairman of the Texas Indigent Defense Commission and a member of the board of the Council of State Governments Justice Center. She is a Life Fellow of the Texas Bar Foundation and a member of the Judicial Advisory Council to the Community Justice Assistance Division of the Texas Department of Criminal Justice. By virtue of her office, she is vice-chair of the Texas Judicial Council.
In 2003 Presiding Judge Keller received the Distinguished Alumni Award for Judicial Service from the SMU Dedman School of Law. Reelected 2018.