You can spin a 152 easier than anything I have flown. Im flying 172SP and Duchesses. But when I first started the 152s were what I was flying everyday. I had never flown one untill I started instructing and when I did my first stalls with a student I was in for a little suprise. Wing dropped like crazy and we would have spun if I didn't kick in opposite rudder. But I agree with what has been said, if the student is new and not anywhere near a checkride I will always use rudder to alleviate his/her problem and turn it into a learning experience. If you feel the wing drop add opposite rudder, then I usually show them a floating leaf and show them the effects of rudder control in a stall. But if they are prepping for their chekride my feet stay on the floor and we get to go spinning