Anyway, everything you state needs to be "student centered". Don't insert yourself into the narrative. If you have any kind of communication from parents that would support this, then you can include "community input" but keeping students safe (in loco parentis) is a priority. Yeah, maybe kids are safe but there are far too many unknown variables in this equation.
In addition, any research you can include on competition in schools may be useful along with explanations of how you can still provide an opportunity for students to learn and perform without going to contest.
I'm not trying to start an argument with anyone here on any points, just offering my point of view. Hope it helps.