A study involving teachers and administrators from 16 elementary, middle, and high schools in Tennessee investigated the factorial structure of the Self-Directed Learning Readiness Scale (SDLRS). The SDLRS includes 58 Likert-like items designed to measure the readiness of adult learners to assume self-direction in the learning process. Study subjects were participants in TN LEAD, a statewide school leadership development program. A total of 439 subjects completed and returned the SDLRS. Exploratory factor analysis of the SDLRS was conducted using principal components factor solutions with orthogonal rotation. Application of the Kaiser-Guttman rule provided 15 initial factors with eigenvalues greater than 1. A scree test was conducted to extract the four most significant factors. Using orthogonal rotations, two- and four-factor models were examined. A reliability analysis of the total SDLRS was conducted using Cronbach's coefficient alpha; the reliability and corrected split-half reliability were 0.93 and 0.89, respectively. It is concluded that the SDLRS has an underlying structure of four dimensions measuring readiness for self-directed learning: (1) love of and enthusiasm for learning; (2) self-confidence in the ability to learn; (3) self-concept as an independent learner; and (4) tolerance of ambiguity, risk, and complexity in learning. Eight data tables are included. (TJH)