Lakehill Preparatory School is a college preparatory school in the Lakewood neighborhood of east Dallas, Texas (U.S.). The school is accredited through a number of bodies including the Texas Private School Accreditation Commission, which works through the State Commissioner of Education.Currently, the school is accredited by the Independent Schools Association of the Southwest (ISAS), and is a member of the National Association of Independent schools (NAIS.) During the 2011-2012 school year, the enrollment at Lakehill was 380 students.