Application Checklist Details

CATS Testing

Applicants for Full-Day Montessori through Form 5 are required to take a cognitive abilities assessment through the Collaborative Academic Testing Services.  Full-Day Montessori, Kindergarten, and Form 1 applicants will take the WPPSI-IV.  Forms 2 - 5 applicants will take the WISC-V.  Please visit to register for testing.

ISEE Testing

Applicants for Forms 6 - 12 are required to take the Independent School Entrance Examination (ISEE). The ISEE is offered throughout the academic year at many locations in San Antonio and around the United States. It is not mandatory to take it at the Saint Mary's Hall campus. Register online or visit for more information.