From the NCOW Homepage:
Launched in March 2013, the National Census of Writing seeks to provide a data-based landscape of writing instruction at two- and four-year public and not-for-profit institutions of higher education in the United States. Despite numerous calls for empirical data to ground the design and administration of writing programs and writing centers, this is the first comprehensive study of its kind and covers the following sections:
Originally a listserv query by Jill Dahlman at the University of North Alabama, this crowdsourced database contains information on departments/programs that compensation adjunct (broadly defined) faculty for participating in orientation/professional development (i.e., beyond teaching) activities. If you want to contribute information about your own program, you can add it directly to the spreadsheet, or you can send it to Jill via email.
This link goes directly to the CAW page that presents results of several studies they’ve conducted, most notably the 2012 “Portrait of Part-Time Faculty Members” survey. There’s also a long list of other research reports that allow users to pull out data by disciplines, different kinds of job statuses, and so on.
AAUP's yearly salary survey, broken out by institution types, positions, geographical regions, gender, and more. Also information on president and provost salaries, faculty and administration benefit costs.
The Crowdsourced Spreadsheet of Postsecondary Writing Course Caps has been assembled by synthesizing the previous available information, on CompPile (which was a static webpage) with an editable google doc that allows visitors to add their own institutional information to it. It is recommended that users download the spreadsheet if they plan to manipulate or sort the information. The spreadsheet is managed by Holly Hassel (email@example.com).