And I will just add to that the PA28 that BEagle refers to is PA28 Warrior, not the PA28 Cherokee (140) which spins like a top. If in doubt check the aircraft manual BEFORE spinning!
Really, if people want to learn about spinning they should go gliding. In the PA28 you can sit fully stalled with cross controls and the aircraft just sits there nodding gently. Now go and try that in a glider and see what happens