On January 13, 2020 the FAA implemented changes to how the written tests are scheduled and accomplished. This change caused some confusion for those who were trying to schedule tests around that date, but hopefully the system will become more clear over time.
The instructions provided on the PSI Website are generally the most complete and understandable I have found. Go there for more details. You can also find testing center locations, and do practice tests on that site. It is a great resource.
The basic changes are:
- First you need to create an account in IACRA, and obtain a FAA Tracking Number (FTN). The FTN will be required for scheduling the test. Your FTN will remain the same for all future FAA tests, so you will only have to do this once.
- Create an account on the PSI website, and schedule your written test.
Additional FAA reference material regarding IACRA and written testing is found here and here.