TExES Bilingual Ed 164
Bilingual Education Supplemental (164)
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ExploreAbout this exam
The Bilingual Education Supplemental (164) is a Texas educator certification exam administered through the Texas Educator Certification Examination Program. It is designed for candidates who already hold, or are working toward, a classroom teaching certificate and who need the supplemental credential to teach in a bilingual education setting. The exam is delivered as a computer-administered test (CAT) consisting of 80 selected-response questions, with a total appointment time of 5 hours - 15 minutes for the CAT tutorial and compliance agreement and 4 hours and 45 minutes of testing time. A passing score is 240, and the exam fee is $116, though additional fees may apply. Appointments are offered year round on a first-come, first-served basis at CAT sites in Texas and nationwide, and scores are released at 10:00 p.m. Central time on published score report dates. Because the test is supplemental, it assumes foundational knowledge of teaching and concentrates on the knowledge and skills specific to bilingual instruction. To prepare, review the official preparation manual and materials for this exam field, work through practice questions under timed conditions, and confirm your registration, testing, and score reporting obligations under program policies before your appointment.
What you'll study
About TExES Bilingual Ed 164 preparation
What is the format of the Bilingual Education Supplemental (164) exam?
It is a computer-administered test (CAT) made up entirely of 80 selected-response questions. There are no constructed-response items. The appointment includes a 15-minute CAT tutorial and compliance agreement plus 4 hours and 45 minutes of testing time, for 5 hours total.
What score do I need to pass?
The passing score for this exam is 240. Your score report is released at 10:00 p.m. Central time on the published score report date rather than immediately at the end of your testing session, so plan around that reporting schedule.
How much does the exam cost, and when can I test?
The exam fee is $116, and additional fees may apply depending on your circumstances. Appointments are available by appointment year round, and testing is offered on a first-come, first-served basis at CAT sites located in Texas and nationwide, so book early if you need a specific date.
Can I retake the exam if I do not pass?
Yes. An exam can be retaken after 30 days, and you cannot register again until your prior results have posted to ECOS. If you are affiliated with an educator preparation program, you must request your program's approval to retest. You are limited to five attempts to take a certification exam.
How should I use my testing time?
You have 4 hours and 45 minutes for 80 questions, which works out to roughly three and a half minutes per item. Pace yourself accordingly, answer every question since there is no penalty for guessing, and reserve the final portion of your session to review flagged items.
Is this the only exam I need for a bilingual certification?
No. The 164 exam is a supplemental certificate exam, so it is taken alongside the requirements for your base classroom certificate and any other required exams, such as the Bilingual Target Language Proficiency Test (BTLPT) Spanish where applicable. Confirm your full requirement set with your educator preparation program.
What should I study first?
Start with the official preparation manual for this exam field, since it defines the domains and the knowledge and skills assessed. Then work through practice questions under timed conditions, and spend extra time on the domain where your practice accuracy is weakest rather than reviewing everything equally.
What are common reasons candidates fall short?
Two frequent problems are underestimating the breadth of bilingual-specific content and running out of time on later questions. Others include registering late for a preferred appointment date and failing to check program policies before test day. Read the preparation materials thoroughly and rehearse full-length timed sets.
Will every question count toward my score?
Not necessarily. Exams may include questions that are evaluated for future administrations and do not affect a candidate's score. Treat every question as if it counts, since you cannot identify which items are being field-tested.
Is a new bilingual exam replacing this one?
A separate Bilingual Education Spanish Supplemental (165) exam lists a first administration of 9/1/2026, with registration opened 6/17/26 for testing beginning that date. The official source does not state that 164 is being retired, so check the program website for current requirements before registering.