Parts one and two of the 44th yearbook of the Association for Student Teaching (AST) contain papers presented at the 1965 annual meeting of AST. Exploring theory as related to professional laboratory experiences, part one includes discussions of applying "inductive-empirical" theory to teacher behavior, using theory as a basis for devising a custom-made approach to student teacher supervision, financing and improving student teaching programs, devising continuous laboratory experiences as a "pretenure" center for developing teachers who can serve the special educational needs of all people, and using interaction analysis training to enable the student to discover consistent generalizations for teaching and learning in his laboratory experiences. Part two includes discussions of the effects and applications of interaction analysis training (which causes changes in teacher behavior and increased awareness of communication patterns), teacher education program curriculums with emphasis on the Teacher Education and Media (TEAM) Projects, ways of profiting from the Team Projects, and the funding problems growing out of the cooperative nature of student teaching programs (with specific funding needs and proposed applications of the Elementary and Secondary Education Act of 1965). Also included is an 81-item annotated bibliography of literature published from 1963 to 1964 on the subject of student teaching. (SM)