Public schools have a long-established practice of conducting screening assessment of students as they enter kindergarten. The purpose of this study, conducted in spring 2021 by the Maine Education Policy Research Institute at the request of the Joint Standing Committee on Education and Cultural Affairs, is to gain a current list of the assessment tools that public schools are using to evaluate their incoming kindergarten students. Early childhood education provides a critical foundation for students' future learning, and schools work hard to identify students' needs as quickly and as efficiently as possible. Kindergarten assessment is also an area of heightened interest for researchers and policymakers who seek high-quality data on the readiness of the youngest learners as they enter the K-12 system.