Question: Can I get a list of schools that have Rolling Admissions?
Since you're a senior seeking rolling-admission colleges in mid-April, The Dean is going to read between the lines here and guess that you are looking for last-minute college choices. Perhaps you didn't get accepted anywhere--or at least anywhere you want to go--and now you're eager to explore other options.
If this is the case, here are two suggestions:
1. Go to the College Board Advanced Search site at http://apps.collegeboard.com/search/advhome.jsp. Fill out the questionnaire and when you get to the "Deadlines" category, be sure to click on "Regular application deadline or priority date hasn't passed." (Hint: the fewer preferences you select regarding size, location, majors, etc., the more options you'll get when you hit "Results" at the end.)
2. The National Association for College Admission Counseling puts out a very helpful "Space Available Survey" that lists colleges with late openings. The bad news, however, is that it's not posted until early May. When the time comes, you can find it at: http://www.nacac.com/survey/results.cfm