The non-availability of a standardized scale to measure unreached farmer’s knowledge level influenced the researchers to construct a test for measuring knowledge of unreached farmers of Tamil Nadu state on recommended paddy production package of practices. Pertinent items were collected covering all aspects from crop production guide developed by TNAU. After getting jury opinion on the items, test index of item difficulty, index of item discrimination and index of item validity were worked out. To administer the knowledge test a respondent was given one mark for each correct answer and zero for wrong answer. Thirty five (35) statements were finally selected from a total of sixty (60) statements.