20200613014509I

While practicing a simulated engine failure in the traffic pattern, the student executed a forward slip. Instructor took the controls after the student did not respond to the instructors request to recover from the forward slip, and attempted to execute a go around was attempted, but it was too late. The window to react was short, and they missed it. The student still had in left rudder input, and as a result, the aircraft touched the runway at full power, and changed course to match the direction of the nose. The aircraft began to climb, and the underside of the fuselage made contact with a mandatory instruction sign marking the intersection of rwy 5 with 30-12. The impact forced the aircraft back to the ground, across 30-12, and into the grass, also impacting a runway edge light. Back pressure, brought power to idle and allowed the aircraft to stop without brakes in order to prevent the nosewheel from digging into the ground, then turned off the avionics and shut down the engine. Further inspection revealed that one blade of the propeller had impacted something - furthermore, the sign had remained underneath the aircraft, rolled and made impact multiple times, then ejected on the left side and impacted the horizontal stabilizer as well.