Preheat your oven to 350°F (175°C). Grease a 9x5 inch loaf pan.
In a large bowl, whisk together the flour, baking soda, cinnamon, salt, and baking powder.
In another bowl, beat the sugar and eggs until smooth. Add the oil and vanilla extract, and mix well.
Stir in the grated zucchini.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Pour the batter into the prepared loaf pan.
Bake for 60 minutes, or until a toothpick inserted into the center comes out clean.
Allow the bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.