All slow flight training must be done at a safe altitude. The emphasis on slow flight is familiarity with aircraft handling near stall speed, intentionally stal

All slow flight training must be done at a safe altitude. The emphasis on slow flight is familiarity with aircraft handling near stall speed, intentionally stalling it so you can practice proper recovery. There is already a failure if you stall, and then there's a second failure if you don't immediately recover. A stall spin at low altitude requires three failures: stall, stalling at low altitude, improper recovery which then leads to entering the spin (one wing with more developed stall condition than the other).