If you only look at a single year, then it paints the picture that half of teachers quit after a year but in this scenario 10/11 do. My point is that different

If you only look at a single year, then it paints the picture that half of teachers quit after a year but in this scenario 10/11 do. My point is that different studies can have different methodologies, still be valid, and without digging deeper can be misleading. You'll need more than "I believe the average is" to really know what's going on.