Introduction:Continuous assessment of clinical education and learning in nursing requires  valid and reliable tools. This study aimed to assess psychometrics of "the Clinical Learning Factors Questionnaire for nursing students".

 Methods:In the present descriptive study simple random sampling was used to recruit nursing students and educators at Sadoughi University of Medical Sciences and Islamic Azad University of Yazd. Face validity was assessed using interviews and quantitative face validity by calculating impact score (IS) in ten nursing students. Content validity index (CVI) was determined using Waltz and Basel method by ten Nursing Faculty academics. The internal consistency according to Cronbach's alpha coefficient for calculating internal consistency and test-retest for determination of stability was tested on15nursing students. Data were analyzed using descriptive and analytical statistics by SPSS V.16.

Results: The Clinical Learning Factors Questionnaire for Nursing Students included 89 items in seven sub-scales. The qualitative and quantitative face validity were assessed and determined acceptable. The IS of all items of the questionnaire was greater than 1.5, CVI of all items was more than 0.7 and CVI of the whole questionnaire (CVI-S) was determined 0.88. The Cronbach's α coefficient of the seven subscales was 0.81-0.91 and for the whole questionnaire was 0.96. The Pearson correlation coefficient of the subscale was calculated 0.80-0.94 and for whole questionnaire was 0.96.

Conclusion: Based on the findings of this study, the Clinical Learning Factors Questionnaire for nursing students has appropriate validity and reliability. This questionnaire can be used in education assessment and in evaluating clinical learning of nursing students.