Recent studies do not find consistent relationships between teacher degree, major, and certification, and PK outcomes (Early, D. M., Bryant, D. M., Pianta, R. C., Clifford, R. M., Burchinal, M. R., Ritchie, S., et al. (2006). Are teachers' education, major, and credentials related to classroom quality and children's academic gains in pre-kindergarten? "Early Childhood Research Quarterly, 21", 174-195; Early, D. M., Maxwell, K. L., Burchinal, M., Bender, R. H., Ebanks, C., Henry, G. T., et al. (2007). Teachers' education, classroom quality, and young children's academic skills: Results from seven studies of preschool programs. "Child Development, 78", 558-580), raising questions about the impact of the degrees and certifications of PK teachers on children's learning. The researchers note that these findings do not support the conclusion that teacher education does not matter for children's learning. However, they do not provide specific directions for policymakers who decide on the minimum requirements for teacher qualifications in PK programs. This commentary raises issues for researchers and policymakers about whether PK is part of a K-12 educational continuum, how teachers are prepared to teach, how research is designed to inform policy, and the importance of developmental science in policy-relevant education research. As part of a future PK-16 education system, we propose that the BA be the entry requirement for PK as it is for K-12 teachers, followed by professional education combined with extensive classroom experiences.