I have found it to be thorough, especially for the younger set – I have a 6 and 8 year old finishing module 2, did Module 1 last year. Ancient history is fun and important, but unless your child is going to be a history major in college, they’ll probably be able to do fine with less than half of what they’ll learn in these history modules.
I was valedictorian of my high school and graduated Suma Cum Laude from my college and I can only remember getting ONE year of WORLD history my sophomore year of high school. One YEAR of world history!!!! That covered EVERYTHING, not just ancient history. I got another year of US History in High school and I had to memorize lots of dates and names of historical persons during grammar school, but it was all from textbooks so dry that it never made any impact. You’ll find the living books you’re reading will make a huge impact on your child’s ability to remember it and turn it into valuable life lessons as well as an intelligent worldview for analyzing our current world events.
Our state doesn’t even require history as a subject to be taught to homeschooled children – of course we teach it anyway, but it’s not required.
One of the things that I love about SCM is the balance of the subjects – they don’t spend an inordinate amount of time on history as some curriculums do… Some have the child spending 2 or 3 hours a DAY reading books for history, to me that’s just too much for lots of different reasons.
If you’re still concerned, you could easily follow the SCM guide and on Bible days add a short reading from Story of the World or Child’s History of the World by VM Hillyer, both have short readings that would make a great supplement… but if your child struggles with listening for so long, then it really is ok to drop it or even put it off until she’s older.