In this paper the researcher observed about family size, learning achievement and dropout rate of the students at the primary level in Swat, Pakistan. A sample size of 170 respondents was interviewed from the total population of 700 (dropped students). To find out the effect of family size and learning achievement on dropout rate of the students. A logistic regression model was applied. The result indicates that majority of respondent’s family size was above ten members and monthly income (4,000-7,000) PKR. Similarly, large family size was found highly significant “P = 0.000” and Low Learning Achievement was significant as “P = 0.011” with dropout from school. The study concludes that out-of-school (large family size) and in-school (low learning achievement) are the major causes of high dropout rate from schools at primary level.