Differential influences of various family processes for students of science talent and students in general education from Grades 4 to 12 and Science Olympians in Korea were examined by administering Korean Inventory of Parental Influence. Korean Science Olympians were additionally interviewed about their family and school experiences. Family processes were perceived more frequently or more strongly by scientifically talented students and younger students than general-education students and older students, respectively. Supportive and conducive family processes were maintained even in the high-school period in the families of scientifically talented students, whereas they decreased as students in general education get older. Father's involvement emerged as the most influential predictor of mathematics and science achievement, whereas press for intellectual development was a significant predictor for grade-point average (GPA). Parents may need to maintain the conducive and supportive family processes even for their high-school children in order to nurture their talents in mathematics and science. (Contains 6 tables.)