I would suggest biscuits and gravy with scrambled eggs.
Are you going to have to decorate too?
Mellowdee

I make an Italian eggs casserole...I cook onions and green peppers...just cook them a little to soften....then I scramble eggs, keep them soft with a bit of milk...
And into a greased casserole layer the eggs, the slightly cooked veggies and grated chedder cheese...salt and pepper each layer...and refrigerate until time to pop into a 350 oven, with a foil cover to heat up.
Figure 1 1/2 eggs per serving. For 25 people, that's 2 dozen eggs in 2 8 by 11 dishes. Estimated costs $8 at most.
Then some sausages....either make your own patties or buy a ready made and cook....8 pounds ought to be well more than enough. Estimated costs $30 at most.
Fruit....a watermelon, hollowed out, decorativly cut, filled with white grapes, cantelope blue berries etc... Estimated costs, $25.
Breads and/or rolls....cinnamon rolls....you know how....costa for 25 perhaps $15?
So far we are at $80...with lots to spare...
You have $70 to do napkins, glasses, candy, nuts and bloody marys.
Easy-peasy!
Linda C

For 25 people and $150.00 I would do breakfast casseroles (probably three or four different kinds), fruit, muffins and juice. I would not do decorations or alcohol beverages (let the teachers do that if they want to.)

I wouldn't do it if I couldn't make a profit!

I've made these several times in regular-sized muffin tins. My daughter loves them! You can add just about anything in them. These would be good with muffins, a fruit tray, and juice like trixietx mentioned above. Maybe even with some kind of mini sausage rolls, or scones with honey butter!

Mini Frittatas Recipe courtesy Giada De Laurentiis
Show: Everyday Italian
Episode: Breakfast

Makes 40 mini frittatas.

Nonstick vegetable oil cooking spray
8 large eggs
1/2 cup whole milk
1/2 teaspoon freshly ground black pepper
1/4 teaspoon salt
4 ounces thinly sliced ham, chopped
1/3 cup freshly grated Parmesan
2 tablespoons chopped fresh Italian parsley leaves

Preheat the oven to 375 degrees F.
Spray 2 mini muffin tins (each with 24 cups) with nonstick spray. Whisk the eggs, milk, pepper, and salt in a large bowl to blend well. Stir in the ham, cheese, and parsley. Fill prepared muffin cups almost to the top with the egg mixture. Bake until the egg mixture puffs and is just set in the center, about 8 to 10 minutes. Using a rubber spatula, loosen the frittatas from the muffin cups and slide the frittatas onto a platter. Serve immediately.

Here's more ideas I found. I've never tried these recipes but they sound very economical. I've included the link so you can see a picture of the dish. Hope this helps!

Breakfast Melon Ball Crunch
http://www.foodtv.ca/recipes/recipedetails.aspx?dishid=6935

Breakfast BLT
http://www.foodtv.ca/recipes/recipedetails.aspx?dishid=5977

Breakfast Club Sandwich
http://www.foodtv.ca/recipes/recipedetails.aspx?dishid=7898

Cardamon Coffee Cake
http://www.foodtv.ca/recipes/recipedetails.aspx?dishid=4668

I used this menu for Easter brunch. All the recipes are easy (lots can be done ahead of time)-it is also a very economical and elegant menu. If you care for any of the recipes-let me know.

Sausage and Egg Overnight Casserole
Strawberry and Spinach Salad
Cheese Grits
Rolls