I did a quick online search as well, and see what you mean. Are you willing to travel to a sailing school and if so where?
There are many sailing schools in the Caribbean, The Med, MX, SA, AU, UK, and the US, offering various degrees of certification.
Perhaps go to the local marinas, and look for the boats with the big stick in the middle
and visit with the skippers, sailors, and marina operators. They may be able to direct you to a school, or maybe willing to share their knowledge. Another source could be local sail boat and yacht dealers. They sell and service them and are connected to the sailing industry.
I wish I could provide better assistance.