The research community in school libraries is quite small. If you are interested in current research in this area, you might want to look at the following journals, which publish peer-reviewed, scholarly research in the area of school librarianship.
Journals
School Libraries Worldwide (the journal of the International Association of School Librarianship): http://www.iasl-online.org/pubs/slw/ (the archive can be found here)
School Library Research (the research journal of the American Association of School Librarians): http://www.ala.org/aasl/slr
Other journals of interest (that publish a combination of professional and research articles) include:
Knowledge Quest: http://www.ala.org/aasl/knowledge-quest
Teacher Librarian: http://www.teacherlibrarian.com/
School Library Monthly: http://www.schoollibrarymonthly.com/
School Library Journal: http://www.slj.com
You can also explore the archives of the conference proceedings of the IASL's Annual Conference.
Researchers
Dr. Ross Todd Dr. Marcia Mardis
Dr. Patricia Monteil-Overall Dr. Vi Harada
Dr. Melissa Johnston Dr. Maria Cahill
Dr. Judi Moreillon Dr. Nancy Everhart
Dr. Sandra Hughes-Hassell Dr. Lucy Santos Green
Dr. Marlene Asselin Dr. Dianne Oberg
Dr. Kasey Garrison Judy O'Connell
Dr. Mihaela Banek Zorica Dr. Jennifer Moore
Dr. Mary Ann Harlan Dr. Ruth Small
Dr. Barbara Stripling Dr. Carol Kuhlthau
Dr. Renee Hill Dr. Barbara Schultz-Jones
Dr. Donna Shannon Dr. Daniella Smith