You're not being overprotective. This isn't the 1920s. The reality is that gangs, drugs and bullies are serious problems the schools don't have a handle on.
I've homeschooled my kids in part for the same reasons for the last 10 years, since my oldest was 4. In the time since I've become a mentor for other homeschoolers in my area, volunteering as my County Contact for my statewide homeschooling network group. I've seen many, many single parents homeschool.
You can give him assignments for him to complete while you're at work. You could also have him do online courses. One of my kids does a lot of her work online, while one of the others is more of a book kid.
You could also get in touch with some other homeschoolers in your area and find out if there is a co-op he could go to, and if so, if they could take him since you're at work (and offer to pay part of the gas). Finally, you might even find another homeschooling family in the area willing to let him be with their family during the day. I've seen all these scenarios and more.
If he's doing whatever you decide during the day, then if needed, you can work with him at night on things he's not quite sure about. Two really good online sources are Kahn Academy, a free video library with videos on many subjects. Another source is MathTV, again with hundreds of videos, but these are all about math.
There's also Free World U, a project by a South African doctor to bring education at every level into areas where travel to a physical classroom may be impossible due to distance and poverty, but kids have access to the village's sweat-rechargeable-battery-powered laptop. It's really good, and goes from preschool through the basics of medical school!
I too am a mother, who is homeschooling my 12 year old daughter, while my 11 year old daughter is attending schools. While I am not as concerned that the school will be rough (my 12 year old has Lupus and cant go to school). What I was concerned about was whether I would be able to provide the level of homeschooling education that would ensure that my daughter will be accepted should she get better and decide to go to college.
If you are prepared and you have the time to put into homeschooling then go for it, but if you must work outside the home, there may be a problem. Structure and Focus are very important to homeschooling. The child's education is very important to whether they are able to go to college and enhance the instruction you have given.
I notice that during my day (I work from home) that I must spend a lot of time explaining concepts, and for some thing I have not done in the 20 years since I was in school, must be relearned. If you have the time and the confidence to do this then you should. However, you are never too overprotective when ensuring the safety of your child, and if you need help with this I will be more than happy to provide you with some resources.
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.