@Raajbeary I do sympathise with the situation your son is in. Unfortunately, not all schools are accommodating to individual requests, and there’s the issue of fairness to other students who may be in a similar position.
If the school is unwilling/unable to do more, one option is to follow zac’s mum’s advice and opt out of CCA altogether, but it does mean that there may be repercussions later on if CCA record is a necessary prerequisite (e.g. participation in other activities, trips etc.)
I’m sure you’ve tried already, but is there any way you can persuade your son to accept the CCA he has been allocated? Can he participate in the most low-key way, just doing the minimum? Attendance is better than not having any CCA at all.
I don’t want to offend, but is there a reason why your son is so against accepting what he has been allocated? It was his 3rd choice, so is it something he really hates or can’t cope with? There are many kids who accept what they have been assigned, however unwillingly, and grow to at least tolerate it, and maybe even like it. Learning to accept what he doesn’t like can be a learning experience. Of course, none of us would want this for our kids, but sometimes it can’t be helped.
My younger daughter returned from overseas in mid-Sec2 and also had a similar experience trying to get into a CCA. She was refused by her first few choices, but was finally accepted (after appeal, interview and audition) by one that wasn’t among her top choices. We encouraged her to make the best of it, and although she didn’t always enjoy all of it, she made a few friends and gained some experiences that she otherwise she wouldn’t have. Overall, she now looks back at it with fondness for what she learned and experienced.
Wishing you and your son all the best in making your decision.