Continuum Behavioral Health McLean, VA serves Northern Virginia, including Fairfax, Arlington, Falls Church, Prince William and Loudoun Counties, as well as the City of Alexandria and the City of Manassas. During the assessment process, each child receives a comprehensive functional assessment that identifies core deficits and problem behaviors that may be interfering with the child’s ability to learn and participate in daily life at home, school and in the community. Every child’s program is individualized to meet his or her needs, learning style and guided by what is developmentally expected.