Birchtree's DAY SCHOOL Program in Portsmouth, New Hampshire, is a year-round special educational day program for students with autism in grades preK-12. Highly trained and closely supervised staff, including Registered Behavior Technicians® (RBTs®), work with students one-on-one and in small groups. All instruction is data-driven and based on the principles of applied behavior analysis. Birchtree’s team of autism experts at the school includes specialists in the fields of applied behavior analysis, special education, communication, and occupational therapy. These specialists design and closely supervise all programs at the school. Birchtree's OUTREACH PROGRAM provides consultation, assessments, training, and direct services in public schools and community settings in New Hampshire and neighboring states.