TRUANCY
A pupil who is absent from school without a valid excuse more than 3 days in one school year or tardy in excess of 30 minutes on each of four days or more in one year is a truant, and will be reported to the Attendance Office of the local public-school district.
A student is considered a habitual truant who has been reported truant two times, and is then subject to dismissal from the school.
In the event that a school suspects that a student is truant (absent from school without a valid excuse), the school administration should first contact the parents/guardians. If the school suspects that the student is a habitual truant (absent three times in a school year without a valid excuse) and all resources at the school level have been exhausted, the school principal should notify the local Child Welfare and Attendance authorities.
https://handbook.la-archdiocese.org/chapter-13/section-13-2/topic-13-2-7