Florence,
There is much wisdom already in this thread!
I am continually amazed at how heartfelt and Christ-centered the ladies on this board are in their advice! What a blessing!
A few thoughts I had that may or may not help, but I thought I'd just share them for you to ponder. I, too, am always taken off-gaurd by the onslaught of emotions that come with puberty for boys. Having all sisters I expected it with girls, but with my boys it continues to surprise me!
One thing that may help would be to allow your son to work away from the rest of the family in a quiet place. We did this with my oldest son when he turned this age by sending him upstairs to my room with a timer and a task. The part he loved was being able to sprawl out on my bed and get comfy while doing his work unsupervised. He loved the quiet, and if he made noises or drumming (which my boys all love to do), I wasn't bothered by it.
I also set the timer downstairs in our kitchen to match the timer my son took upstairs. In this way, I was aware when the timer upstairs rang. If he didn't appear within 3-5 min. of the timer ringing, I called for him to come show me what he had accomplished. If he hadn't accomplished much, we set what he was working on, aside and he returned to work downstairs near me again with the next subject. My oldest son quickly learned that being alone in a quiet place to work was a reward that came when he exhibited maturity, hard work, and self-monitoring when he was not in my sight. I had him work in my room, so he wasn't tempted by all of this things in his own room, or one of our other boys rooms. He knew he was not to be going through my things, but rather it was a place to work.
My oldest son now works in his own room, as a sophomore, and loves that equally as well. He has formed the habit of not getting off task, but he practiced for years in my room first. As my next one is 12 turning 13 this year, and my room is now free, we will try my next son upstairs a bit (same drill) and see how he does.
I don't have my olders do all their subject upstairs, I actually move my kiddos about from room to room pretty often, just to keep them up and moving. So, the boys typically only do 1 or 2 subjects in a row in one place (unless the subjects are short). They stay fresher for me if required to move around the house as they learn.
This is why I actually schedule who is in what room for every subject!
In this way, we use much of our home and get out of "the sit in a desk or at the table to do all work" mentality.
Last, I'll mention that I think you are so wise to get your husband involved! As our boys are striving to become men, it is helpful for the father to get involved and show his son the value of work.
When we set aside work at our house, we do have dad oversee that in the evening. It has gotten to the point where we never have any work set aside anymore. However, here comes puberty, so we'll see. We do strive to give grace as much as possible, if the child has stumbled over a hard part of an assignment or has taken a long time to produce beautiful work. In those cases we don't set the work aside, but rather jump in and help the child get caught up, partnering with him in every way so he can successfully finish on time. We only set aside work for outright continual dawdling.
Blessings,
Carrie