The study seeks to verify the contending propositions of size productivity relationship prevailing in DTW II Project, to measure and compare per hectare cost, returns, farm productivity, to estimate the impact of farm size on employment. It uses empirical data collected through a lengthy intensive farm survey of 220 sample farmers in an area of Mymensingh district in Bangladesh. The study shows that medium farms obtained the highest yield and gross margin despite using least amount of inputs. They were technically more efficient but no farm group was found to be efficient allocatively. The study also shows that there is scope to increse the doses of fertilizer despite its higher price in the recent years. It is also found that small farms created more employment opportunities and medium farms used resources more efficiently in the study area.