That is definitely an important discussion to have with his guidance counselor, school psychologist, and IEP team. One suggestion I have is maybe figuring out what he loved so much about sports and how you can engage that to give him hope that he can still enjoy things he enjoyed before. Like would coaching be something he would enjoy? Maybe he would be interested in sports counseling, reviewing school game tapes and giving his feedback.

Try talking to the students parents, administrator, guidance counselor and psychologist if available at your school. This is an issue that needs to be addressed immediately. At the same time try introducing the Paralympics to the entire class, their are various videos showcasing how amazing people who have disabilities are, with various videos stating that paralympians are superhumans. Showcase sports and other activities your student may be able to do, even implementing modified games where he can participate and shine in.

I believe involving him in athletics would be something very special for this young man. It is critical to not come across as feeling sorry for him though as this would most likely isolate him further.

I think it is important to follow his IEP and cater to his interests when creating differentiated instruction for him.

I think to start I would ask him why he says "That sucks" to every book, assignment, and opportunity. If his reason for not trying is lack of interest, you should incorporate his interests in the class activities and show him how the things he is learning are useful in the real world. If his cause for not trying is fear of failure, you could model a growth mindset. For example, you could say, "I might not be able to do this yet, but I will be able to if I keep trying. Maybe I should a try different way to do this problem."

I would try and spend some one-on-one time with him and build a relationship with him so he feels comfortable sharing more on how he feels. For example, you could play a quick 5 minute game or activity that connects to the content you taught that day.

I would do my best to create kinesthetic activities that give each student a job (while still meeting this student's needs and IEP of course). This way, he would feel included and see that he has a valued purpose from his classmates in the activity. Kinesthetic activities often offer a unique sense of participation, and he may get a similar feeling of responsibility as he used to in his past experiences in athletics.

This is definitely difficult. I would try to have a very upbeat class and maybe focus a lesson on successful people with those types of things.

I suggest having a conversation with him and finding out what things he is interested in that you might be able to integrate into the lessons to encourage him to participate.