First, I’ve read that their are some curriculums (like Waldorf) which don’t even start to teach letters and reading until age 7. And kids who use this (whether in homeschool or private schools using this curriculum) find that kids catch and show no lag behind other kids their age a few years into the program. (In fact, I’ve read that many studies show it’s worse to push a child early than to start later, especially if a child just doesn’t show that she’s ready at a younger age).
That being said, in public school, to the chagrin of a a lot of Kindergarten teachers (including the one we had) who would like to go at a gentler place and focus on play based learning, there is a big push to do more academically earlier. You might be aware of this and maybe that’s why you’re worried. That’s what we came across when our youngest went to kindergarten.
With our oldest we didn’t notice that because they were both ahead (they had both learned to read before starting school–without much pushing (they just were interested). Not so with my youngest. He didn’t know all his letters either. He was excited to go at first, but then as I started pushing to prepare he started backpeddling and I eased off, thinking that it would be ok, and he would probably be where other kids were cause all the teachers said my other two were way ahead.
Three days into school and he was crying every day…he was just being drug along all year and crying every morning and even with extra help (they took him out and had him with a reading teacher some time every day) he was still very behind where they thought he should be and when they suggested repeating KG at the end of the year we started looking into private school and then decided to homeschool (a decision I wish we had made so much earlier). This in spite of the fact that he liked his teachers.
Even with that being said, I suggest if she still wants to try it, let her. Her experience may not go like our son’s (I have no idea how Florida schools are). But just be prepared to pull her out if it does go like our son’s did. I really, REALLY regret not pulling him out and homeschooling him sooner.
And don’t let anyone push you to push her past what she’s ready for. They may want you to catch up by working with her at home. If she has fun doing that fine, but if she seems burnt out and you have to force her, better to let her play. Cause the first three months of homeschooling was just helping our child overcome the fear of learning he had gotten in school. And I love our schools…they did great for our other kids. Just, for a child who’s not ready it can be very hard.