The purpose of this study is to analyze the difference of self-directed learning ability in college
according to the classification of potential students in shadow education in adolescence period, using
KEDI 2005 panel data from the 1st to 8th wave. As a result of analyzing the patterns of participation
patterns of adolescents' participation of private tutoring through the Latent Class Growth Analysis,
the participation patterns of private tutoring by year are as follows: ‘high-participation group’,
‘decrease-participation group’, ‘low-participation group’, 'high-dependence group', 'decreasedependence
group', and 'independent group' depending on the time of private tutoring participation.
Based on this, we conducted MANCOVA to verify whether there is a difference in self-directed
learning ability in college according to the latent classes of private tutoring participation, with
controlling both the home background and self-directed learning ability in high school. Result of the
research found that the self-directed learning ability of the low-participation group was significantly
higher than that of the high-participation group. As a result, this study suggested that the lower the
participation of private tutoring in adolescence, the more positive effect on self-directed learning
ability in college.