The Northwest Regional Education Service District is the largest and most diverse education service district in the state, serving twenty districts and more than 123,000 students. Two of the largest districts reside in the urban parts of Washington County while many smaller, more rural districts reside along the Columbia River, Coast Range Mountains, and Pacific Ocean. This diversity in size, landscape, and geography makes the region one of the most attractive spots in Oregon and an area where supplemental services provided by NWRESD are in great demand by schools both large and small. The district directly serves children - birth to age 5 - in Early Intervention/Early Childhood Special Education Programs in Clatsop, Columbia, Tillamook and Washington Counties. In addition, services are provided to young children and students with autism, orthopedic impairments, vision impairments, hearing impairments, and speech impairments through the ESD's Related Services Department. In addition, NWRESD operates six school age psychological and behavioral schools and day treatment programs in Washington County. The agency is highly regarded for its leadership in the state in Special Student Services, Instructional Services, and Technology.