IMPROPER PLANNING/DECISION BY THE INSTRUCTOR PILOT (CFI) BY TEACHING STALLS AND SLOW FLIGHT TO A PRE-SOLO STUDENT ON A DARK NIGHT, AND THE INSTRUCTOR'S FAILURE TO MAINTAIN (OR REGAIN) CONTROL OF THE AIRPLANE, DUE TO SPATIAL DISORIENTATION. FACTOR'S RELATED TO THE ACCIDENT WERE: THE CFI'S LACK OF EXPERIENCE IN THE TYPE OF OPERATION, AND DARKNESS.