16 Printed materials, namely, books, workbooks, handouts, posters, reproducible forms, educational, instructional and teaching materials, and catalogs featuring books, workbooks, posters, handouts, reproducible forms, educational, instructional and teaching materials, all in the fields of professional development, professional learning communities (PLC), social and emotional development, school climate, differentiation, response to intervention (RTI), positive behavior interventions and supports (PBIS), leadership, service learning, gifted education, special needs, and mental health