Glen L. Bull is a professor of instructional technology in the Curry School of Education at the University of Virginia. He served as director of Teacher-LINK, one of the nation's first regional K-12 Internet systems and co-developed one of the nation's first statewide K-12 Internet systems, Virginia's Public Education Network (PEN), which linked all 2,000 of Virginia's schools to the Internet.  He is a founding member and past president of the Society for Information Technology and Teacher Education (SITE), and editor of Contemporary Issues in Technology and Teacher Education. He serves as co-director of the Curry Center for Technology and Teacher Education.