In RFPS where they refer to them in the instructions or have an appendix that offers you websites or phone numbers of programs or agencies.
On the Internet where you have to be careful how it is determined that particular site is a best practices model. The U.S. Department has a “clearinghouse” where best practice models are listed.
At bidders’ conferences where staff from best practice models are often asked to speak or are there to hand out materials and answer questions.
At major colleges or universities whose various departments are hired to conduct evaluations and determine best practice models.
In your community where you can get a first hand look at a program in operation. These can be found through various city and county government websites.
The funding agency who, if you simply call them and ask for an example of what they consider a top program near to your area, will usually gladly give you several to choose from.
In books and textbooks written about the area of your proposed program. Often authors will cite examples from best program models or, at the least, cite several in their bibliography.
Try to find best practice models that serve a similar target population as yours, in a similar environment (rural, urban, etc.), and with approximately the same budget.
More about this in the next Blog and in my new book: RIGHT BEFORE YOU WRITE: The Groundbreaking Process Used To Win More Than $385 Million In Competitive Grant Awards.