As a sophomore, he was part of a 12–1 Bolles Bulldogs team led by running back Jawan Jamison that defeated Tampa Catholic for the 2009 FHSAA Class 4A state title.

[1] In Theus' senior season, Bolles went 16–1 and beat Miami Washington for the second Class 4A state title in three years.

Regarded as a consensus five-star recruit, Theus was ranked as one of the best offensive tackle prospects of the class of 2012, which also included Zach Banner, D. J. Humphries, and Andrus Peat.

[3] With scholarship offers from almost every major program in the country, Theus chose Georgia over Notre Dame, Florida, Texas, and Alabama.

[5] He was only the third true freshman to start at offensive tackle in a season opener for Georgia since freshmen became eligible in 1973, and the first since Trinton Sturdivant in 2007.

1 in the Southeastern Conference (SEC) in yards per play, Theus was named Freshman All-American by CBSSports.com,[7] The Sporting News,[8] and Phil Steele.

As a sophomore, Theus lost his starting job for stints when Kolton Houston returned to the team after having his eligibility cleared by the NCAA.