C172 flight instructor reported the student pilot drifted and touched down adjacent to the runway ed...

Attributes
ACN	1480917
Time
Date	201709
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	VFR
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Flight Instructor Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 80 Flight Crew Total 3500 Flight Crew Type 1800
Events
Anomaly	Ground Event / Encounter Loss Of Aircraft Control Ground Event / Encounter Object Ground Excursion Runway

Narrative:

During landing; student pilot had the controls; under instruction. Student pilot made an otherwise good approach from the pattern; to the runway centerline. As student pilot began round-out; and to gradually reduce the power; the student pilot unexpectedly veered to the left. Aircraft touched down on the grass and instructor applied corrective pedal in an attempt to avoid striking runway edge lights. As aircraft decelerated and corrected towards runway centerline; the edge of the left landing gear struck and knocked over two of the runway edge lights. Aircraft was inspected to have no damage. Notification was made to the airport manager the following morning.

Original NASA ASRS Text

Title: C172 flight instructor reported the student pilot drifted and touched down adjacent to the runway edge. While correcting back to the runway; contact was made with runway edge lights.

Narrative: During landing; student pilot had the controls; under instruction. Student pilot made an otherwise good approach from the pattern; to the runway centerline. As student pilot began round-out; and to gradually reduce the power; the student pilot unexpectedly veered to the left. Aircraft touched down on the grass and instructor applied corrective pedal in an attempt to avoid striking runway edge lights. As aircraft decelerated and corrected towards runway centerline; the edge of the left landing gear struck and knocked over two of the runway edge lights. Aircraft was inspected to have no damage. Notification was made to the airport manager the following morning.

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.