Practicum training is an essential part of The Chicago School of Professional Psychology (TCSPP) Marriage and Family Therapy (MFT) Master's degree program, and the cornerstone for preparing students for clinical practice. To characterize the development across clinical competency areas, the current study examined midpoint and final evaluation data from practicum supervisors of 224 TCSPP MFT students. Additionally, final student evaluations of supervisors were reviewed to determine the impact of the supervisory relationship on the development of clinical competencies. Principal component analyses (PCA) were conducted on the items from both the supervisor and student evaluation; one factor emerged. Cronbach's alpha coefficients reflected high internal reliability of all utilized scales. A paired samples t-test utilized to evaluate the difference between mid-point and final supervisor evaluation ratings highlighted improvements in competency across measured domains. A logistic regression analysis confirmed TCSPP MFT students demonstrated significant improvement between the mid-point and final evaluations. A one-way analysis of variance (ANOVA) examining the relationship between the student and supervisor evaluations demonstrated a trend towards significance. Findings are particularly relevant to TCSPP faculty and staff, as they serve as a metric of the effectiveness of the practicum training in the preparing MFT students for professional, clinical practice. Overall, data from the proposed study facilitate a more nuanced understanding of the role of practicum training experiences in ensuring clinical competency. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]