Congratulations on your successful return to school.

I do remember your previous posts on this, and I'm not sure what you're looking for here. I do believe that yelling-- which I distinguish from screaming at, cursing at, or otherwise emotionally abusing someone-- can be therapeutic, as you say. If the result is not fear or any other negative reaction, if you consent to this and if you understand it as it seems like you do, I suggest you keep doing it. I do wonder if it would be useful for you to have a conversation with your T about learning more about why this works for you, although your childhood suggests some obvious answers.