In this phenomenological study, ten school counselors-in-training were interviewed to explore their experiences at a school-based clinical practicum. Emergent themes included professional growth and development, collaboration and teamwork, knowledge gains, and preparation. Results of the study indicate that a school-based clinical practicum facilitates self-efficacy, provides unique collaborative experiences, and allows for an understanding of family and school systems mediated by on-site faculty supervision. Implications include curricular considerations for school counselor preparation and the value of school-based clinical practicum experiences for school counselors-in-training.