Calendar Important Dates
Listed below are important dates at AHS for the 2020 - 2021 school year.
| First Day Of School | Mon, Sep 14 |
| Staff Dev / Workday - No Students | Fri, Oct 9 |
| Holiday - School Closed | Wed, Nov 11 |
| Grading Day - No Students | Fri, Nov 13 |
| Thanksgiving Break | Wed, Nov 25 - Fri, Nov 27 |
| Winter Break | Mon, Dec 21 - Fri, Jan 1 |
| Holiday - School Closed | Mon, Jan 18 |
| Grading Day - No Students | Fri, Feb 5 |
| Holiday - School Closed | Mon, Feb 15 |
| Staff Dev / Workday - No Students | Wed, Feb 24 |
| Spring Break | Mon, Mar 22 - Fri, Mar 26 |
| Grading Day - No Students | Fri, Apr 16 |
| Staff Dev / Workday - No Students | Wed, Apr 28 |
| Holiday - School Closed | Mon, May 31 |
| Last Day For Seniors | Thu, Jun 10 |
| Last Day Of School | Fri, Jun 18 |