After graduation from the Adams School, Thomas attended the S. Horace Scott High School on Stiring St. between 8th and 9th Avenues. He played football and loved auto mechanics. Thomas developed his talent for singing, and often stayed after school to practice. He was chosen to become a member of the High School Meistersingers, a renowned choral group in the County. He was one of 10 students from the School selected to sing with the All-State Chorus, which was hosted at the Scott in January of 1942. He won awards for his talented voice, including 2nd place for mixed quartet in the State championships.
