My son attends a private school that is structured as a classical education classroom/homeschool hybrid program. (Did you get that? Because I always feel like it's such a mouthful to say!

) Even though it's a private school, it was initially based on a similar program that is publicly funded charter school, so maybe something here will give you an idea or two.
Students attend class on campus at least two days a week and homeschool the other three. Classes are multi-age (except for kindy). The "primary" level covers grades 1-3, "intermediate" covers grades 4-6, and the middle school level combines grades 7 and 8. The school determines the curricula in some subject areas, while the parents choose curricula in others. Everyone uses the same math program, one that I detest, at least for my son’s grade level (kindy). Perhaps it is better for older students. In kindergarten, classroom instruction covers some math and science, a bit of phonics and writing, some art, and mostly follows the approach of FIAR (literature-based program with lots of extension activities in the other subject areas). In the other grades, the school uses a history spine (a la SOTW and
The Well-Trained Mind). Classroom teachers do some math and science instruction, some reading, some writing, some art and group projects, but mostly they seem to do a whole lot of history-based activities.
Students also have the option of taking additional “enrichment” classes. The school offers a TON of choices here: art, music, choir, hands-on science, robotics, computers, fencing, yoga, crafts, language, culture (studying a region or country), etc.
For homeschool, parents do some assigned activities related to classroom instruction, but mostly they handle the skill areas — math practice, reading, phonics, writing, grammar, spelling, copywork/dictation — and extra-curricular stuff — art, music, physical education, health, keyboarding, etc.
There are no grades. All assessments are descriptive and portfolio-based. Class sizes are small (capped at 12 per class). The school sponsors lots of parent-education workshops, seminars, and meetings to help parents with the homeschooling process.
My son *LOVES* going to campus. He loves his teacher, his classmates, recess, lunchtime, the field trips, the “schooly-ness” of it all. He also really loves staying at home for homeschool. He is such an eager little guy for every homeschool session. Most mornings, he is usually sitting at the desk waiting for his homeschool teacher to get started. Seriously.

I think that it’s awesome that he gets to see other kids regularly and do some academic work together, but he totally gets to go at his own pace and have individually tailored instruction for things like reading, writing and math.
I’m not sure that I really like everything about this school, but I’m a hard woman to please. I really can't stand the FIAR activities. While it's fine for literature study, when FIAR takes the place of a more systematic approach to history, geography, social studies and science, all the concepts are just a jumbled mess. The school in general spends so much time on writing, classic literature and cute little history activities that I don’t think the school does justice to math and science (one of the problems that I'm having with the "spine" approach to organizing scope and sequence). I'm not a big fan of some of the assigned work. There has been too much busywork, imo, and some of the classical education stuff doesn't seem to be jive with research in cognitive development. There is also quite a pronounced religious (Christian) flavor to the school culture, although it claims to be non-religious. Still, the classroom/homeschool hybrid thing has been a wonderful kindergarten experience for ds, so I can’t complain too much.