Practice Test Geeks(CASS) Coding Accuracy Support System Certification Practice Test

CASS Flashcards

183 study cards across 27 topic decks — every card built from a real CASS practice question. No account or sign-up needed. Flip to reveal the answer and explanation, mark what you know, and drill what you don't.

CASS exam key facts

  • The required CASS Stage II certification file contains about 150,000 test addresses with no answers, and the software must code them. Source
  • To pass CASS certification, software must score 100% in the Delivery Point Barcode, eLOT, Perfect Address, DPV/DSF2, RDI and SuiteLink categories and at least 98.5% in every other category. Source
  • USPS charges $1,330 per test for CASS (Coding Accuracy Support System) certification, according to Price List Notice 123 effective October 4, 2026. Source
  • CASS certification lasts until the end of the current certification period, and Cycle O certifications expire on July 31, 2028. Source
Start Free CASS Practice Tests →
🎲 Mixed Deck — All CASS Topics
100 cards sampled from every topic · the fastest way to find your weak spots
Study →

Decks by Topic

Address Matching & Standardization
9 cards
Postal Address Verification & Validation
9 cards
Software Certification & Testing
9 cards
USPS Addressing Standards & Compliance
9 cards
Address Hygiene & Data Quality
7 cards
Address Hygiene & Data Quality
7 cards
Address Hygiene & Data Quality
7 cards
Address Hygiene & Data Quality
7 cards
Delivery Point Barcode Standards
7 cards
Delivery Point Barcode Standards
7 cards
Delivery Point Barcode Standards
7 cards
Delivery Point Barcode Standards
7 cards
Intelligent Mail Barcode (IMb) Standards & Application
7 cards
Address Hygiene & Data Quality
6 cards
Automation Rate Qualification
6 cards
CASS Deliverability & Return Mail Management
6 cards
CASS Deliverability & Return Mail Management
6 cards
CASS Deliverability & Return Mail Management
6 cards
CASS Output Records & Certification Reporting
6 cards
CASS Output Records & Certification Reporting
6 cards
CASS Output Records & Certification Reporting
6 cards
Delivery Point Barcode Standards
6 cards
DPV & ZIP+4 Processing
6 cards
International Address Standards
6 cards
Mailing List Management & Dedup
6 cards
NCOA & Move Update Processing
6 cards
Presort & Mail Preparation
6 cards

What Practice Test Geeks adds beyond an AI chat for CASS

An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:

  • A fixed CASS question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
  • Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
  • A printable CASS cheat sheet you can print or save as a PDF.
  • Free CASS practice tests with the correct answer shown after each question.
Start Free CASS Practice Tests →

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. postalpro.usps.com — Test delivery, eligibility, exam format, renewal, score validity, passing score, score release · verified Oct 2026
  2. pe.usps.com — Fees · verified Oct 2026