Narrative:

I was training in the traffic pattern with my student ZZZ airport (non-towered). I was on final approach about to reach the runway and another small plane rolled onto the runway and took off without self-announcing. They proceeded to take off and we had to take evasive action (immediate climb and offset to the side of the runway) to avoid a collision. I believe the other pilot simply didn't look before he took the runway (they were in a high wing aircraft - cessna?). I asked on the CTAF what their intentions were; they said that they were departing straight out and flying up the coast at 300 feet. I continued to fly the right traffic pattern to continue closed traffic at runway xx. As I entered the downwind another aircraft was flying the opposite direction of the traffic and was flying directly at me. I made another evasive maneuver (climbing left turn) away from the opposing traffic and continued to fly the pattern for runway xx. The opposing plane did a 180 left turn and entered the downwind in the correct direction next. There was also another aircraft in the pattern with a similar tail number. I'm not sure how there was such chaos and total confusion in this traffic pattern; but it was like 'coyboy rules' with some pilots made some almost catastrophic errors. I believe that there were six aircraft in the pattern at one moment. There were two aircraft taking off and two; who entered the pattern after there were already four planes in the pattern. There were too many planes in the pattern at one time. I believe that I (we) did nothing wrong. We followed the rules and were going with the flow of the traffic pattern and operating safely.

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Original NASA ASRS Text

Title: C172 instructor reported traffic congestion and incorrect traffic procedures at a non-towered field resulted in an NMAC.

Narrative: I was training in the traffic pattern with my student ZZZ airport (non-towered). I was on final approach about to reach the runway and another small plane rolled onto the runway and took off without self-announcing. They proceeded to take off and we had to take evasive action (immediate climb and offset to the side of the runway) to avoid a collision. I believe the other pilot simply didn't look before he took the runway (they were in a high wing aircraft - Cessna?). I asked on the CTAF what their intentions were; they said that they were departing straight out and flying up the coast at 300 feet. I continued to fly the right traffic pattern to continue closed traffic at Runway XX. As I entered the downwind another aircraft was flying the opposite direction of the traffic and was flying directly at me. I made another evasive maneuver (Climbing left turn) away from the opposing traffic and continued to fly the pattern for Runway XX. The opposing plane did a 180 left turn and entered the downwind in the correct direction next. There was also another aircraft in the pattern with a similar tail number. I'm not sure how there was such chaos and total confusion in this traffic pattern; but it was like 'Coyboy rules' with some pilots made some almost catastrophic errors. I believe that there were six aircraft in the pattern at one moment. There were two aircraft taking off and two; who entered the pattern after there were already four planes in the pattern. There were too many planes in the pattern at one time. I believe that I (we) did nothing wrong. We followed the rules and were going with the flow of the traffic pattern and operating safely.

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.