The following services are offered at San Marcos and are provided by qualified mental health professionals:
- individual
- group
- family
- reality-oriented physical experiential services (ROPES)
- milieu treatment
- behavior enhancement program
- master treatment plan development (MTP)
- monthly treatment plan updates (MTPU)
- discharge planning
- recreational therapy
- education managed in partnership with The University of Texas at Austin Charter School System (UT-UCS)