Lacking 4th and 5th grade years

So, I have a pretty accurate, proportional memory to what it should be all my life throughout the years. But I've begun to notice that I lack specific memories for these years. Most of my life revolved around school and church. And most of my memories stained in my brain from early childhood are of school related things. But there's not any memory for the fourth and fifth grade years. It's a mystery to me. I get in touch with some of my friends I met those years, the first appearance I remember them making into my life is during 6th grade. They insist it was in 4th or 5th grade though, and I believe them.
I barely remember the names of my teachers those years, though I have kept record of that for some reason throughout all my years in grade school when I had the same one to three teachers all day for a year. I do remember two consecutive, related events that happened towards the end of the school year in 4th grade. I know that event was the basic alternative in how I was dealing with the hurt.
When I was ages 7 through 12, my mom suffered from the worst of PTSD and DID, with major depression as well. Around 6 or 7 was when the happy and innocently smiling kid probably turned inward and never came out again. I dealt with a lot of hurt through these years, with my 4th and 5th grade years being the peak of things with her, most likely. But all that sadness happened at home (and can probably remember much of what happened during this time at home). So then, why can't I remember anything at school?

Hi! Maybe when you were at school is just when your mind decided to take a "break", because what was going on at home was taking a lot out of you. It does sound like dissociation, I think some similar stuff might have happened to me.

I can't help but wonder whether you can "do" the topic you were taught during those years? Or is the education totally lost too?

I would suspect you could. imho you are supressing memories now but I doubt that would have stopped cognitive learning at that time.

Hi figtvcmpta. I can relate. I am missing most of grade 6 and all of grades 7 and 8. I even discovered this gap the following year in high school when some kids recruited me to play varsity soccer. Why did they do that? Because they played soccer with me in middle school? Huh? I played soccer?!

On this website I mostly read the DID forum.

Like the comment before said. Your brain was taking a "break". I have one memory from kindergarten, one from first, two from second, and no memories for third or fourth. And lately my alter has been showing me flashbacks. My teachers always complained that I never payed attention and I was always "off in outer space". But I retained the school knowledge. You just couldn't cope with what happened at home so school was your "escape" then.