Having had a wife who taught, I can tell you that second graders can get out of control. So generally, until proven otherwise, I side with the teacher.
Middle schoolers are one thing, but if a teacher can’t control 2nd graders, they never should have been allowed into the classroom.
25 years as a teacher, she probably remembers at worst when she could smack the little sh*ts around. Or at best, time them out with out having to write a 25 page report documenting why they are so naughty and establishing a behavior plan.
My wife taught until recently. Kids know more about their "rights" than any ACLU lawyer.