TSIA2 stands for the Texas Success Initiative Assessment, version 2. Launched in 2021, the TSIA2 is computer-adapted test taken by Texas high school students in order to enroll in a Texas college, including dual enrollment courses taken during high school. The TSIA2 is the assessment test created to support the Texas Success Initiative (TSI). The TSI is the product of a state law which outlines how Texas colleges are required to assess the readiness of applying students. About 135,000 high school students take the TSIA2 every year or about 35% of graduating seniors who are enrolled in a Texas public school.