Meadowbrook Christian (19-0-2), the ACAA champions, is the No.2 seed and plays 15th-seed Mansfield at Balls Mills on Tuesday at 3.
Mount Carmel earned the sixth seed with a 13-5 record as they play 11th-seed Hughesville (8-7-1) at Balls Mils at 7.
The top three teams in Class A move on to states.
In the Class AA quarterfinals, Lewisburg made a late run in the regular season to earn a playoff spot, much like Danville, who got into the playoffs thanks to a tie late in the season against Selinsgrove. It continues a streak of never missing the postseason for Danville.
Shikellamy, however, is making its first appearance since 2007.
Danville (9-7-2) takes on HAC-I champions Montoursville at 3 at Loyalsock followed by Lewisburg (6-6-4) taking on Athens at 5.
Shikellamy (9-8-1) takes on Central Columbia at 7. Selinsgrove (12-2-3) faces Warrior Run (12-5-1) at 3 on Tuesday,
The champion of the Class AA finals is the only team that advances to the state tournament.