Thaddeus Stevens School encourages students and teachers alike to start clubs and activities based on mutual interests. 

Clubs vary from year to year, but recent clubs and activities include:

• Comic Book Club
• Dungeons & Dragons group
• Computer programming team
• Felting club
• Art club
• School soccer team
• Skiing and snowboarding at Burke Mountain
• Weekly P.I.N.E. (People In Need Everywhere) Day fundraiser to raise money for the Heifer Foundation, or for local businesses, families, and organizations
• Fundraisers, such as Themed Movie Nights, to raise money for the upper school field trips