Leaving Cert students may study: Accounting, Art, Biology, Business, Chemistry, Construction Studies, Economics, English, Engineering, French, Geography, German, Home Economics, History, Health Education, Irish, Mathematics, Music, Physical Education, Religious Education and Technical Drawing.

[5][6] ACS encourages students to participate in Gaelic football, soccer, rugby, golf, basketball and athletics.

Selected sporting highlights from 2012 to 2014 included: In 2012, the Senior Gaelic football team, under the guidance of Mark Gilsenan, a Maths teacher in ACS, won the Lennon cup for the first time, defeating St. Mary's of Drogheda on a scoreline of 4–11 to 0–7.

The following year, Ardee made it back to the Lennon cup victorious once again, defeating The Marist of Dundalk in a replay.

[3] Four years later, after two new senior team squads, the Senior Gaelic team achieved success at a national level by beating St Declan's Community College from Waterford in Newbridge on Easter Saturday in 2018, they were crowned All-Ireland Schools 'C' Championship winners, beating St. Declan's CS from Waterford 1–9 to 0–3 at Newbridge.