Skyhawk 172/Cutlass 172
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Instrument
Flight Crew Last 90 Days 30; Flight Crew Total 600; Flight Crew Type 350
Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Aircraft Aircraft Damaged; Flight Crew Landed in Emergency Condition; Flight Crew Rejected Takeoff
Aircraft
Instructor aborted takeoff after aircraft had trouble climbing on takeoff and hearing stall horn without an excessive amount of pitch. After landing on the runway the aircraft skidded past the departure end to a stop in the grass. No occupant sustained injuries. The aircraft sustained only minor damage to the right wheel.
Pilot reported that density altitude may have been a factor for the poor performance in ground effect.  Pilot stated aircraft engine; weight and balance were all checked and found within limits.
C172 instructor reported an aborted takeoff resulting in a runway excursion.