So, op, what do you see as your role in his education? Parents are partners in their DCs' education.
I had an extremely bright son who became passionate about all sorts of things as a kid - art, music, mythology, birdwatching, languages, geology. His younger siblings had their own interests, but many coincided with DS1's. Their primary was a low-decile, multi-cultural school, with kids who had many social issues, and the principal, who was also DS's Year 6 teacher, left the 4 brightest kids to work independently. They had a wonderful time exploring each other's, complementary, interests. I made a point of taking all my kids, and some of DS's "group" on field trips to look at archeological sites that I had worked on. We travelled for miles to watch rare birds, and did all the research about genus and species, their Latin meanings, habitat and migration patterns. We went to museums wherever we found them. We had Japanese and French homestays so that my DC could become acquainted with other cultures and languages first-hand. They learned Japanese Kanji and cuisine. We stayed on marae and learned Maori cultural practices. We played spelling games on long trips in the car, and snuggled down in the big bed of an evening to make up silly limericks - such a useful adjunct to English classes.
They all learned to swim at a very young age, how to be water confident, and how to react to emergencies. We went camping in the bush, and they learned bushcraft and survival skills. We canoed down the Whanganui River - 4 days and nights of being in total wilderness, surrounded by mountains and completely out of contact of any sort. We had cats and dogs and chickens. I went on courses abroad, and brought them back fascinating realia of other cultures.
We bought books on astronomy, Polynesian navigation, archaeology, marine biology, evolution...their choice. They ran cross-country, played hockey and netball, swam competitively, learned the cello and the trumpet. We did a tour of the entire South Island in our little old beat-up car, to see the whales, seals and penguins, camping out on beaches. I read to them for an hour every night, and each child had their own "sleepy time music" of their own choice . DS has taught himself Ancient Greek, Portuguese, and speaks fluent Japanese. He has DC of his own, whom he has raised in exactly the same way. A rich, varied, expansive education beyond the classroom.
You have to remember, OP, that YOU are your child's primary educator. It takes time, effort and dedication. Ultimately, however, it will be a LOT cheaper than a private education, because, believe me, having the fees, or part thereof paid is only the start of the real cost. Several different uniforms, sports fees and costs, school trips... it swallows up a fortune. Be a great role model, take time to do research on things that interest him, challenge him to fun quizzes and games. It will pay huge dividends.