Unfortunately, yes. When a student is assigned to a district’s alternative school, the student usually has to sign an agreement not to go to any other campuses in the district during their placement, even for football games, soccer games, plays, pep rallies, or other extracurriculars. If a student disobeys that agreement, the student can be arrested and charged with trespassing.
However, you can ask your district for special permission for your child to attend an extracurricular event. For example, if your child is in a soccer league that is unconnected to the school district that incidentally meets and practices on district property in the evenings, you can ask your child’s administration at their regular campus to agree to let your child attend those practices. If the district agrees to make an exception for your child during certain time periods or for certain events so that they can be on district property other than the alternative school during their placement, make sure you get something in writing about this from the district. Do not let your child attend an extracurricular event or practice on district property during their placement at your district’s alternative school without written proof that the district provided your child with permission, just in case.