Have you ever tried Homeopathy before? There are treatments you can use for colds/ear infections. The treatments are natural and stimulate your immune system to fight the infection. It's a little tricky to figure which treatment to use, it's based on your symptoms and emotions. Some of the treatments can be found at food health stores.
Also, vitamin c sodium absorbate is something else you can try. I have a powdered form from bronsonvitamins.com that I put into drinks (usually juice because my daughters can't taste it) when my children get colds.
Schools are full of germs and I read children can get 10 colds a year. I also read if the ear infection is middle ear, that about 85% of the cases heal on their own.