He then studied at the University of the South, and later at the Episcopal Theological School in Cambridge, Massachusetts.

[2] High was elected on the fourth ballot as Suffragan Bishop of Texas on June 7, 2003 in Christ Church Cathedral.

[3] He was consecrated on October 4, 2003 at Camp Allen by Bishop D. Bruce MacPherson of Western Louisiana.

He retained the post until his election as Provisional Bishop of Fort Worth on September 19, 2012, and was installed on November 3, 2012.

In October 2020 he was appointed Assistant Bishop in the Episcopal Diocese of West Texas, a role he commenced on February 1, 2021.