C.,
I understand your concerns given your history of miscarriage, but as a school teacher you are exposed to so many germs that it seems to be an even bigger risk to go without the flu vaccines this year. As you have heard, there is a greater incidence of complications and death from the flu in pregnant women, so even if you weren't working in a classroom you would be strongly encouraged by the medical community to vaccinate yourself. Here is an article from Parents magazine about pregnancy and the H1N1 virus:
http://www.parenting.com/article/Pregnancy/Health/Swine-F...
I would also encourage you to check the CDC website for more information. As you can see, pregnant women are the first ones listed under "high risk groups":
http://www.cdc.gov/h1n1flu/groups.htm
I got the seasonal flu shot during both of my pregnancies, with no ill effects, and will be getting both vaccines for everyone in my family this year. Good luck, stay healthy, and wash your hands a lot!
A.