Taken from his website:
"William Ayers, Distinguished Professor of Education and Senior University Scholar at the University of Illinois at Chicago (UIC), and founder of both the Small Schools Workshop and the Center for Youth and Society, teaches courses in interpretive and qualitative research, urban school change, and teaching and the modern predicament. A graduate of the University of Michigan, the Bank Street College of Education, Bennington College, and Teachers College, Columbia University, Ayers has written extensively about social justice, democracy and education, the cultural contexts of schooling, and teaching as an essentially intellectual, ethical, and political enterprise. He is currently the vice-president of the curriculum division of the American Educational Research Association, and a member of the executive committee of the UIC Faculty Senate."
So none of these things qualify him to be a guest speaker about education?
Now you might want to go read all the hundreds, maybe thousands of articles that point out the other side of him. As stated in first post of mine, he has not renounced his actions as a terrorist yet.
Do a little research and pay attention to the sites you gather the info from. You, if objective, will discover he has not changed his ideology and the above is more or less sheep's clothing to hide the wolf.