This study examined the structural validity and reliability of the Self-Directed Learning Scale, in a representative sample of student teachers enrolled at a Chilean university. Additionally, this study established performance levels within the scale and explored its variation in accordance to gender and the number of years spent in the program. Using exploratory factor analyses, an oblique 3-factor solution (self-control, self-management, and desire for learning) was retained, being very similar to -and theoretically coherent with- the original structure of the scale. Both the factors' scores and the total scale score showed adequate indices of internal consistency. Women outperformed men in self-management, and no differences were observed in the other 2 factors. The 3 dimensions correlated directly and significantly with the number of years spent in the program. These results are discussed as initial evidence to support the validity and reliability of the scale in this population of student teachers.