What Genghis said
Deliberately entering a spin and not recovering immediately ( ie within 1/2 turn or ideally less) is an aerobatic maneuver and should be taught as an essential part of an introduction to aerobatics in an aerobatic aircraft (or glider) under the guidance of a aerobatic instructor,
not in a non aerobatic airplane with an instructor with no aerobatic training or experience
More than 25 years ago the FAA eliminated spinning from the PPL syllabus in favor of enhanced stall recognition and recovery training. Since then the fatal accident rate for stall spin accidents has actually gone down.