Narrative:

On final the student began to slip the airplane into the wind; however he had the wrong control inputs in. He had his ailerons to the right (away from wind) and rudder to the left (into wind) which is opposite of how it should be. This was a checkride so I was monitoring the airspeed and descent rate but did not comment as to test his abilities. As we were over the runway; the student let out the slip but did not fully let out the left rudder; causing us to land sideways. It was not a hard landing at all; no bouncing or porpoising; but it was sideways of the centerline. When we did touch down; with the nose wheel left of centerline; I did not want to add right rudder due to us having a speed of around 50 knots and the winds coming from the left. I felt at the time that this would not be a good decision to add right rudder and have it veer uncontrollably over to the right. Instead; I prepared for a roll into the grass. Immediately upon entering the grass I pulled the mixture and kept the nose wheel off the grass as well as stayed off the brakes. As soon as we came to a stop; I called a chief flight instructor on the comms in the plane and talked to him where he said to contact maintenance. I left everything as [it] was in the plane on the ground and asked maintenance if they needed anything from me; they said they just needed to inspect [for] damage. There was no damage; but the airplane was fully in the grass.

Related reports:

Google
 

Original NASA ASRS Text

Title: C152 student pilot and instructor reported the student landed in a crab and lost directional control during the rollout resulting in a runway excursion.

Narrative: On final the student began to slip the airplane into the wind; however he had the wrong control inputs in. He had his ailerons to the right (away from wind) and rudder to the left (into wind) which is opposite of how it should be. This was a checkride so I was monitoring the airspeed and descent rate but did not comment as to test his abilities. As we were over the runway; the student let out the slip but did not fully let out the left rudder; causing us to land sideways. It was not a hard landing at all; no bouncing or porpoising; but it was sideways of the centerline. When we did touch down; with the nose wheel left of centerline; I did not want to add right rudder due to us having a speed of around 50 knots and the winds coming from the left. I felt at the time that this would not be a good decision to add right rudder and have it veer uncontrollably over to the right. Instead; I prepared for a roll into the grass. Immediately upon entering the grass I pulled the mixture and kept the nose wheel off the grass as well as stayed off the brakes. As soon as we came to a stop; I called a chief flight instructor on the comms in the plane and talked to him where he said to contact maintenance. I left everything as [it] was in the plane on the ground and asked maintenance if they needed anything from me; they said they just needed to inspect [for] damage. There was no damage; but the airplane was fully in the grass.

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.