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Apply to Cast TeAch


The application and admission process for CAST Teach High School occurs each school year, from November through January, for enrollment in the following August. Admission is available only through this process.   Application forms are available online on the main Northside ISD website beginning November 28th and closing on January 16th.

Admissions is open to current 8th grade (incoming 9th grade) and 9th grade (incoming 10th grade) students for the 2023-2024 school year.   CAST Teach is open to students in the greater San Antonio Area.  

Students who apply will be admitted to the lottery pool. Once a lottery pool has been established from the applications that meet the initial criteria, the lottery will be conducted. Selections from the applicants are random. Students included in the lottery pool but not selected in the initial lottery will remain in the pool on a waitlist, which will be used to fill additional spots as openings occur.


All students will be notified of their acceptance or waitlist status via email. 


  • Application Available – Nov. 28, 2022

  • Application Due – Jan. 16, 2023

  • Acceptance Letters Mailed – Jan. 27, 2023

  • Commitment Forms Due – Feb. 6, 2023