TSI: Texas Success Initiative (TSI) Assessment Information & PracticeWhat is the TSI and why do I need to take it?For the Dual Credit program in high school, the TSI Assessment is used to determine readiness for college level work.  The TSI has 3 tests - reading, writing and math.  A student may not need to test in all areas; the tested sections are determined by the course(s) a student wants to take.  If a student meets exemption requirements, they may be able take classes without needing the TSI Assessment.