You can learn Lisp on your own, outside of the curriculum. But you would not learn that unpublished material from the professor outside of school. Unless the

You can learn Lisp on your own, outside of the curriculum. But you would not learn that unpublished material from the professor outside of school. Unless the professor's material was rubbish, maybe everything worked out for the best. Once you get a job you'll have 25-45 years to learn about more practical topics.