This study is the first national survey of supervision and mentoring practices for early career school psychologists (ECSPs). Respondents included 700 participants, 38% of whom reported having access to professional supervision. Time, availability, and proximity to a supervisor were found to be the most common barriers to accessing supervision and mentoring; access to technology, supervisor interest, and cost were not found to be as significant. Nearly 30% of ECSPs reported feeling pressure to practice outside their boundaries of competence because they did not have access to mentoring or supervision, suggesting a potential ethical concern. Results demonstrate the need to provide more supervision and mentoring opportunities for ECSPs, particularly given the National Association of School Psychologist's requirement that first-time Nationally Certified School Psychologist renewal applicants complete a year of mentoring or supervision. Implications of the results, strategies to support the barriers to access, and future directions for research are addressed.