Photo credit: Beaumont Independent School District
Reported in BISD: Students will be disciplined for walkouts. (Beaumont Enterprise, 2/23/2018)
Superintendent Dr. John W. Frossard, Ed.D.
The 38-page Student Code of Contact is found here.
I suspect the following language, found on page 5, is what Ms. Burns is referring to.
School rules and the authority of the district to administer discipline apply whenever the interest of the district is involved, on or off school grounds, in conjunction with or independent of classes and school-sponsored activities.
The district has disciplinary authority over a student:
1. During the regular school day and while the student is going to and from school or a school-sponsored or school-related activity on district transportation;
Texas school superintendent Curtis Rhodes chooses to go negative, bully and threaten students over March for Our Lives participation. (2/22/2018)
UPDATE. Waukesha school superintendent learns that acting like a bully has negative consequences. (2/22/2018)