I currently have an overture feed set up for one of my vertical search properties I doubt very much they are going to give you access to it for "school project." They are hard to get and require at least 1 million searches per month.
Well our vertical is in real estate. We take Census data and combine it with several other databases. Our customers are mostly businesses.
We got a contract with Overture to help generate additional revuenues on top of license fees. Overture was very demanding in regards to the quality of search and our user base.
It may not seem like it but from the business development side of things it was apparent that they are very concerned with the integrity of the their partners and the quality of their search results. Getting the feed took several months of negotiation.