Katherine Thomas School
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The Katherine Thomas School (KTS) is a nonpublic special education day school in Rockville, Maryland, founded in 1995 as a program of the nonprofit Treatment and Learning Centers (TLC), which has operated in the area since 1950. KTS serves students from preschool through 12th grade who have language and learning disabilities, autism, intellectual disabilities, speech and language impairment, and other health impairments that affect learning. The curriculum is multi-sensory, developmental, and language-intensive, built around the Maryland College and Career Ready Standards with Universal Design for Learning techniques and Positive Behavior Interventions and Supports (PBIS) embedded in lessons. The staff to student ratio averages one to six and runs as low as one to two in some programs.
The school is organized into a Lower and Middle School (kindergarten through 8th grade) and a High School (grades 9 through 12), plus summer programs. High school students work toward either a diploma or a Certificate of Completion based on their home jurisdiction's graduation requirements, take core academics alongside electives in art, music, drama, world languages, technology, and cooking, and receive transition services aimed at college, post-secondary programs, technical training, or employment. A job internship program places students at real work sites with mentors. Related services available include Speech-Language Therapy (included in tuition), Occupational Therapy, Counseling, Physical Therapy, and one-to-one classroom aides; for private-pay families, services beyond speech-language are billed at an hourly rate. Grades 4 and up and the high school are based at 9975 Medical Center Drive, while grades K through 3 are located at 1390 Piccard Drive in Rockville.
KTS uses rolling admissions. Students may be placed and funded through their local school district under an IEP, in which case the district covers tuition and fees, or families may apply privately. The application process takes about two weeks and includes a file review, an Open House or visit, current psychological and educational evaluations, teacher and parent evaluation forms, a two-day classroom visit, and a final decision by the admissions team. A $125 application fee applies, and private-pay families pay a $2,000 non-refundable deposit that is applied to tuition. For the 2025-2026 school year, standard tuition is $59,389.85 for Lower/Middle School and $65,218.64 for High School, each with a $3,000 activity fee; intensive programs (STRIDE, EXCEL, BOOST) carry higher tuition. KTS offers donor-funded scholarships and financial aid for families who cannot afford the full cost.
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