The following are links to various resources that get behind the how's and why's of scoring the CPA Exam...

CPA Examination Scoring: An Interview With Krista Breithaupt, AICPA Director of Psychometrics and Research
Questions Answered
1. Why does it take several weeks for scores to be reported to candidates?
2. Were special measures taken during the first year of CBT scoring?
3. Will such measures continue to be necessary?
4. Given the importance of quality control measures, how can the scoring process be accelerated?
5. How has the scoring process changed as of the July/August 2005 window?
6. Which candidates may qualify for early score release?
7. Is there something that candidates can do to qualify for early score release?
8. Will candidates who take the examination on the same day get their scores at the same time?
9. If only some candidates receive scores earlier under the two-wave score reporting process, how is this change an improvement?
10. What changes do you foresee in the immediate future?  

How the CPA Exam is Scored
Topics Addressed
- Description of te CPA Examination
- Overview of the CPA Exam by Section
- Score Scale and Passing Score
- Weighting the Kinds of Questions and Calculating the Final Score

Questions Answered
1. If different candidates take different versions of the Exam are the scores comparable?
2. Are some versions harder than others?
3. Is Multi-Stage Testing fair? Why are you using it?
4. How do you decide which questions are hard and which are moderate?
5. Does that mean hard testlets can have easy questions and less difficult testlets can have hard ones?
6. What if a smart candidate does poorly on the first testlet? Can the candidate still pass?
7. Can a candidate get all medium difficult testlets and still pass?
8. Does this happen?
9. Can a candidate pass just by doing well on the multiple-choice questions?
10. What happens if candidates get a testlet that is too easy or too hard for them?
11. Can I compute my score from the number of questions I answered correctly?
12. What do you mean when you say "statistical characteristics"?
13. What is Item Response Theory (IRT)?
14. Does this mean two candidates could answer the same number of questions correctly, but get different scores?
15. In college some of my professors gave tests that had questions that were worth one point and others that were worth two points. If one student got five of the one-point questions right, he got five points. If another student answered five two-point questions right, he got 10 points. Is that what you're doing?
16. I understand that item response theory says the scores are comparable, but do you have any evidence that scores from tests that vary in difficulty can really be comparable?
17. In general terms, what are the steps taken to produce the reported score?
18. Who are the subject matter experts who do the question reviews?
19. How was the passing score set?
20. Is there more that I can read about the Exam? 

Score Reporting
Topics Addressed
- From Scoring to Reporting
- The Score Report
- Performance Information
- Rescore and Appeal Options
- Score and Score Report Info

Additional Resources
- Psychometrics landing page at The Uniform CPA Examination
- Psychometrics - Wikipedia
- Score Review and Appeal Process
- Summary of Uniform CPA Examination Candidate Test -Taking and Pass-Fail Patterns 2004-2007
- Exam Passing Rates: 2009 | 2008 | 2007 | 2006 

------------------------------------------------------------ -------------
For additional resouces on exam scoring and results release, visit
CPA Zone - www.cpazone.com and follow CPAnet on Twitter - www.twitter.com/cpanet