Application Process

If you are interested in applying for admission to Saint Mary’s Hall, we encourage you to review the Application Checklist below. We welcome applications at any time of the year, but those received after our preferred deadline will be reviewed on a space-available basis.

If you have any questions about the application process, please contact the Office of Admission at (210) 483-9234 or We will be delighted to help you navigate the process!

Application Checklist

Saint Mary’s Hall requires that every student must be vaccinated against vaccine-preventable diseases caused by infectious agents, in accordance with the up-to-date Texas Minimum State Vaccine Requirements for Students Montessori - Form 12. Saint Mary’s Hall does not allow exemptions for reasons of conscience.

For more information about the items on the checklist, take a look at the 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.