About Us. The Keswell School is a private, not for profit 12-month school, that educates children. ages 3 to 21 on the Autism Spectrum using Applied Behavior Analysis and positive. reinforcement. Our model is individualized with small classrooms, 1:1 teaching and. multi-disciplinary, integrating ABA therapy, Speech therapy and Occupational therapy. Job details. The position is Monday – Friday 8:45 – 4:45. Observe students in classroom and work di...