Study for the U.S. citizenship test in Vietnamese

How It Works

1. 1

   Study 128 questions

   Read and understand each question with Vietnamese explanations

2. 2

   Practice test

   Take a 20-question practice test to check your knowledge

3. 3

   Review mistakes

   Review incorrect answers and study again

• The U.S. Naturalization Filing Fee (Form N-400) and How to Request a Reduced Fee

  The Form N-400 fee is $760 on paper or $710 online. Households at or below 400 percent of the poverty guidelines can pay a reduced $380. How reduced fees and fee waivers work.

  Updated 2026-10-21

• Form N-648: The Medical Disability Exception to the Citizenship Test

  Form N-648 lets applicants with a disability or mental impairment request an exception to the English test, the civics test, or both. Who can sign it, when to file, and how to avoid scams.

  Updated 2026-10-21

• The Naturalization Oath Ceremony: What Happens and What the Oath Means

  The oath ceremony is the last step to U.S. citizenship: complete Form N-445, return your Green Card, take the oath, get your certificate. The oath explained line by line.

  Updated 2026-10-15