Where to find money for homeschooling fee?

After a few months of sending my girl's to primary school and reading about other parents' dissatisfaction about the government school, I am somehow made up my mind to pull all my children out from the school system once they completed their primary school. But where to find money for their homeschooling fee? The homeschooling program will be either from Australia or USA which means I have to pay in AUD or USD. One of the ways is to buy gold bullion as an investment coz gold price has always been going up and up. It downs go down but within weeks, it will go up again. Since I have started buying some gold, I shall continue as and when I have some extra money. For the sake of my children's education.