| Date | Event |
| 02/07/2023 | AAT 144 Retest Orders Due |
| 02/08/2023 | AAT 144 Retest Samples Ship |
| 03/01/2023 | AAT 144 Retest Results Due |
| 03/02/2023 | AAT 145 Enrollment Deadline for additions that require additional AAT samples (Initial Organization or Analyst Applications) |
| 03/08/2023 | AAT 145 Samples Ship ~03/02/23; Contact us if your samples have not been received |
| 03/15/2023 | AAT 144 Retest Results Post (available online no later than this date) |
| 04/03/2023 | AAT 145 Final Enrollment Deadline for Analyst additions requiring no additional AAT samples. |
| 04/11/2023 | AAT 145 Results Due |
| 04/25/2023 | AAT 145 Results Post (available online no later than this date) |
| 05/05/2023 | 2023 AAR Annual Invoices Due |
| 05/09/2023 | AAT 145 Retest Orders Due |
| 05/10/2023 | AAT 145 Retest Samples Ship |
| 05/31/2023 | AAT 145 Retest Results Due |
| 06/08/2023 | AAT 145 Retest Results Post (available online no later than this date) |
