No high school classes, other then your core classes (math, reading, etc.) are required for a profession after high school
It depends on where you are at, but there are different pastry chef schools that you can attend. Such as: www.sfbi.com, www.reluctantgourmet.com/baking_pastry_chef_schools.htm or even www.frenchpastryschool.com.
There is a Culinary school in Portland, OR that you can go to to become a pastry chef. If you feel you have the talent, desire, and the fortitude....begin by apprenticing yourself to one of the top hotel pastry chefs in the USA or Europe. It will NOT be easy.
"A Day in the Life of a Pastry Chef" is an excellent and very informative website on pastry chefs. Culimary school and an on the job apprenticeship are needed to become a pastry chef. http://www.hcareers.com/us/resourcecenter/tabid/306/articleid/288/default.aspx
A baker or a pastry chef.
At my high school the only subjects to do with being a chef is food tchnology but to check if there is any others at your school i would ask a teacher.
go to culinary school
No you cannot call you're self a pastry chef without a degree because you are going to have some experience to become one.
Yes you can because pastry chef and chef are both the art of cooking.
yes you have to be able to measure
yes there can be staff for a pastry chef
There is no education that is required for being a pastry chef. Many people consider bakery school to help a great deal, however.
You can get the required training to become a pasty chef at most cooking schools. It usually take a year or two of hard practice.