How to become a paraprofessional in Texas: the three aide levels
Texas calls its paraprofessional credential the Educational Aide certificate, and it comes in three levels. Aide I is the entry level: a high school diploma or equivalent and some experience working with students or parents that your superintendent approves. High school students can also qualify through a set of education and training courses their district verifies.
Aide II and Aide III are where college hours matter. An aide can move up by time on the job (two creditable years for Aide II, three for Aide III) or by college coursework: 15 semester credit hours for Aide II and 30 for Aide III. In both cases TEA's page says the coursework must include work related to child growth and development. Aide II has a third route, a specialized skill the district confirms, which some districts use for interpreters or technology aides.
The district, not TEA, decides which level you are. Your employer recommends you, and only then do you apply and pay in TEA's online certification system.