The 40-item, multiple choices exam was developed in regard to difficult airway management guidelines. The correctness and appropriateness of the test (content validity) were determined by three board-certified anesthesiologists. The try out of the test was performed by 10 novice nurse anesthetists. The index of item objective congruence was 0.82 with Kuder Richardson 21 of 0.8. The assessed criterion-referenced item difficulty and discrimination index were 0.4-0.6 and 0.6-0.8 respectively.