Under the Individuals with Disabilities Education Act (IDEA), all public schools must provide a free and appropriate public education to students with disabilities. As such, public charter schools must accept and educate students with disabilities and maintain open enrollment policies, which often include a fair lottery system. Schools must plan for the capacity to meet a range of special education and disability needs. Advising or implying to a parent of a student with a disability or an English language learner that enrollment is not allowed or that the school cannot provide the modifications or accommodations necessary to educate a student is discriminatory and illegal. "Counseling-out" is the practice of subtly, or not so subtly, counseling parents and inappropriately influencing them to not enroll their child in a school because of the student's disability or language and expected needs. Modeled after "mystery" or "secret shopper" services used in retail stores to evaluate customer service and quality control, authorizers in the District of Columbia (DC) and Massachusetts employed a similar tactic to examine how the front line charter school staff answers questions about enrollment. Specifically focused on the populations of students with disabilities and English language learners, and recognizing that parents of these two groups of students may present different scenarios when contacting schools about enrollment, services and needs, DC and Massachusetts elected to "test" the market with a defined Mystery Shopper/Parent Program. The report examines both programs and highlights its best practices.