Grant applications are so much quicker to write if you have your information readily available. Start a file of:
Useful statistics (for your own school/business/organisation, region and state)
Statement of need (why the project is needed)
Letters of support (don't forget to ask your local MP and other schools/businesses/organisations who support your idea).
You will probably need to adapt the information you've gathered for each application, but it will be far quicker than starting everything from scratch.