Courses / AFF AFF · 2 coursesAFF courses at Texas Tech University Browse course codes and credit hours in the official 2026–27 catalog.Official 2026–27 catalog · Checked 2026-11-05 Find a course in this subject Catalog courses AFF 2001TTU Affiliate Study Abroad1–15 (variable) credit hours AFF 5013TTU Affiliate Study Abroad1–18 (variable) credit hours