The source of truth for Texas Student Unique Identifiers (also known as a UID) is through your public school district (ISD) in which the IEP was created. Your district should have this identifier on record even if your student has been attending private school.
Alternatively, parents of students who have ever attended a public school can visit this website to look up their student's UID. Click on the “Student Look Up” button at the top center of the page which will open a screen where you can submit your child’s first name, social security number, and date of birth. If they have been registered in a public school, the website will provide their UID number.
Currently, this portal does not contain UID lookups for private school students with ISD IEPs. Private school student parents should contact the special education department of the ISD that completed your student’s IEP.
If you have exhausted all methods of obtaining a UID, then you may enter "11111" followed by your zip code in the application instead of the Texas Unique Student Identifier. This will allow you to continue with the application. However, please note that the only way to ensure additional funding for a child with a disability is to have a validated IEP on file with TEA, which requires the child to have a valid Texas Unique Student Identifier (or UID). Please note that the only way to ensure additional SPED funding for TEFA is to have a validated IEP on file with TEA, which means the child has a valid Texas Unique Student Identifier (or UID).
For additional information on what special education criteria is applicable for additional funding and priority versus what special education criteria is applicable for only priority, please read this article.
https://tealprod.tea.state.tx.us/Tea.Widgets/Student/?qid=21&ref=