Narrative:

We got the clearance for takeoff. The student had a hard time holding centerline during the taxi; so my feet were on the rudder as well. [Student applied] full power and started acceleration. The airplane was on the right side of the centerline; so I was helping him to intercept the centerline with my feet. We were slowly intercepting. [I believe he tried to] intercept the centerline of the runway [too] quickly; and kicked the left rudder abruptly. At the time; airspeed was around 50 and [we] started to skid left and right. I took the controls right away; slowed it down and made it stable. It was close to [a taxiway]; so I thought we had better abort the takeoff and move off from the runway. I declared the aborted takeoff and moved off the runway.

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Original NASA ASRS Text

Title: C172 instructor pilot reported rejecting the takeoff after the student experienced directional control difficulties on the takeoff roll.

Narrative: We got the clearance for takeoff. The student had a hard time holding centerline during the taxi; so my feet were on the rudder as well. [Student applied] full power and started acceleration. The airplane was on the right side of the centerline; so I was helping him to intercept the centerline with my feet. We were slowly intercepting. [I believe he tried to] intercept the centerline of the runway [too] quickly; and kicked the left rudder abruptly. At the time; airspeed was around 50 and [we] started to skid left and right. I took the controls right away; slowed it down and made it stable. It was close to [a taxiway]; so I thought we had better abort the takeoff and move off from the runway. I declared the aborted takeoff and moved off the runway.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.