Is his LD limited to one area? For example, my oldest son has slow processing speed and dyslexia. He struggles with speech and writing but he learns and retains material very quickly that he hears. So he and his school emphasize the things he can do well and de-emphasize what he struggles with. In his case, I’d recommend that he find something he can do quickly for the group and try to stick to that. Like if your son can compute quickly, he can contribute that ability of the group. If he comprends a problem or can see a solution quickly, he can offer that to the group. In my Ds’s case, where speech is hard for him, I’d encourage him to look for needed calculations, make them and simply say, “got it.”
maybe you can work with your DC’s teacher and ask ways that he can effectively contribute to the group given his limitations and talents.
" I object to violence because when it appears to do good, the good is only temporary; the evil it does is permanent." Mahatma Gandhi
"This is the ultimate weakness of violence: It multiplies evil and violence in the universe. It doesn't solve any problems." Martin Luther King, Jr.