You can take him out of the school, but be aware that it could do more harm than good. If you pull him from school every time you have a disagreement with him, you're going to be pulling him out a lot. And if you're not enrolling him elsewhere and he misses enough, the school can technically drop him from special education because rather than the disability making him so far behind, it could be the lack of access to education, which is not grounds for receiving services.
Is it right? Not really. But it could happen.
If you pull him to homeschool, you will also lose services because you've basically signed him out of special education. And if you ever decide to enroll him again, they'll have to do the initial evaluation process all over again. I understand you're frustrated and angry.
I would recommend leaving him IN the school while you work things out so he's at least getting the education he needs. If the school isn't communicating with you, YOU need to communicate with them. Call a meeting.
(Calmly) ask why you weren't told they were seeing signs of depression. If they continue to not communicate with you, you call them EVERY WEEK and say, "How is my child doing?" It can't just be on the shoulders of the teacher either--both of you are responsible for keeping the lines of communication open.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.