As a private school, they can pretty much implement whatever policies they please, no matter how stupid or boneheaded they may be.
But a school like this one, which is experiencing long-term enrollment decline (419 kids in 2004 v. 302 kids in 2016 and on the verge of descending into the 200s, with a 52 kid decline in just the last two years alone - indicative of a failed school administration) isn't in much of a position to engage in foolish and dictatorial policies. The family has every right to publicly call them out for what was done to their daughter and I'm guessing that isn't going to increase their future enrollment figures.
Historical enrollment information for Christ The King Elementary School
Quote:
Enrollment figures
2004 419
2006 414
2008 357
2010 378
2012 341
2014 354
2016 302