Im not saying each and every one of them. I just mean eggs are unforgiving of newbies. The cockerals are tougher and the pullets die off first. I know im not the only one that knows this.
Uhh, biologically, it's the other way around. Since a single male can fertilize multiple females, in most species the young males are much more expendable, thus more fragile.
back to the OP---
I would think all your eggs should be fertile, if your rooster's under say 3 years old. Is he a red star also? If so, you should be good. You may run across the occasional unfertile egg, but it should be the exception. There are great pictures on the Incubating and Hatching section showing a bullseye spot, where you can visually detect fertility by cracking an egg. I just check every morning when I make breakfast
I'd suggest going to the Incubating section and reading the stickies at the top, and then some of the threads on storing hatching eggs, etc. Great resources over there!
And as stated, your red stars won't breed true, meaning you wont' be able to tell the sex of the chick by the color. You'll likely get a mix of red and white birds, with maybe some black thrown in or who knows what else...but they'll make great layers. You also need to have a plan in place for the 50% rooster chicks you're going to hatch out.