Narrative:

I received a weather briefing for a local training flight with a student. Winds were gusting 25 knots at home airport and decided to listen to AWOS at ZZZ to see if winds were better. They were only gusting 17 so I decided to take my student there to practice short and soft field landings. Never was it in my mind to check the NOTAMS for the field. We entered left traffic for runway 28 and landed. We departed again on runway 10; as it was a 90 degree crosswind for either runway; and we did another landing. At this time another aircraft was taxiing for takeoff so we exited the runway at the end of 10 and taxied back to the beginning of 10 to allow the other aircraft to depart. We held short of runway to allow my student to reconfigure the aircraft for takeoff and made a traffic call that we would be departing runway 10. Before we started moving; the airport manager came over the CTAF frequency and told us that the runway was closed for fresh tarring till [xx:00]; he said it was NOTAM'd closed and that there were runway closure X's in the grass. He said we could depart. At this time; I looked down at the beginning of the runway and saw the X's; which were hard to see as they were in the grass and made of orange construction netting. I apologized for the confusion and we departed. Had I not been so focused on the better winds at ZZZ and teaching my student landings; I would have thought to check the NOTAMS for the airport and would have discovered its closure or at least seen the xs for the runway.

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Original NASA ASRS Text

Title: GA flight instructor reported performing multiple take offs and landings without realizing the runway was closed.

Narrative: I received a weather briefing for a local training flight with a student. Winds were gusting 25 knots at home airport and decided to listen to AWOS at ZZZ to see if winds were better. They were only gusting 17 so I decided to take my student there to practice short and soft field landings. Never was it in my mind to check the NOTAMS for the field. We entered left traffic for runway 28 and landed. We departed again on runway 10; as it was a 90 degree crosswind for either runway; and we did another landing. At this time another aircraft was taxiing for takeoff so we exited the runway at the end of 10 and taxied back to the beginning of 10 to allow the other aircraft to depart. We held short of runway to allow my student to reconfigure the aircraft for takeoff and made a traffic call that we would be departing runway 10. Before we started moving; the airport manager came over the CTAF frequency and told us that the runway was closed for fresh tarring till [XX:00]; he said it was NOTAM'd closed and that there were runway closure X's in the grass. He said we could depart. At this time; I looked down at the beginning of the runway and saw the X's; which were hard to see as they were in the grass and made of orange construction netting. I apologized for the confusion and we departed. Had I not been so focused on the better winds at ZZZ and teaching my student landings; I would have thought to check the NOTAMS for the airport and would have discovered its closure or at least seen the Xs for 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.