If students keep spinning you, then you're behind the airplane and behind the student, and that's not a good place to be.
Too many instructors teach students to shove the nose over during a stall recovery, instead of teaching the student that relaxing an ounce of pressure on the controls, or decreasing the angle of attack by a degree and a barely perceptible change in aircraft attitude, is all that's required. The student thus becomes afraid of stalls, unusual attitudes, and begins to fear the airplane. The student has not been taught properly.
If a student begins to believe that a stall will quickly lead to a spin, the student is being allowed to enter a regime that could contribute to a phobia early in their training. It may be a roadblock to future learning because the student can easily become preoccupied with the fear that a spin might occur if the student gets slow.
Typically such students will be found landing fast, afraid of slips, afraid to get the ball out of the center, often have difficulties with crosswinds, become nervous about descending and landing or operating at lower altitudes, etc. The student may not even realize it. This can be traced directly back to allowing the student to experience unnerving events too soon...most students don't like nor enjoy unusual attitudes, and certainly won't have fond memories about being surprised by a vertical attitude when being taught basic flying technique.
The original poster seems to be asking with the intent of trying a spin by himself or herself. Teaching yourself about spins is an unwise and potentially dangerous idea. Get good spin instruction from a competent, qualified instructor with spin experience in the type of aircraft you'll be using.
Properly executed, spin recovery is quick; the spin itself is quick. One of the best accountings of spin instruction will be found in Bill Kershners works where he analyzes the phases of the spin in etended steady state spins, and he goes on to explain the myth of an established or steady state spin, too. Remember that as you continue beyond one turn, the spin may pass through a number of phases that may vary from oscillating to inverted to flat, and may even pass into areas from which recovery is not possible. So recovery may be quick, it may be slow, it may not happen at all...depending entirely on your CG, the aircraft in question, your control inputs, your experience, etc.
Far more important for you is learning to recognize the feel of the aircraft at slow speeds/high angles of attack, and stall/spin recognition and avoidance.
