School Bus Fleet editor here. We have national school bus sales data in the research section of the website. (Click on the "Research" tab toward the top of the website's home page.) Please note that you must be a premium member to access material in the research section. The sales data isn't broken down by manufacturer (we don't track that data), but it is broken down by bus type. Our annual Fact Book has contact information for each of the industry's major bus manufacturers - the 2012 edition will be published in a few weeks. If you would like to receive a copy of the 2012 Fact Book, please feel free to e-mail me at firstname.lastname@example.org.