I thought conservatives opposed tenure for teachers and favored evaluations, student grades, and student progress.
in the context of his lawsuit, he was denied tenure even though many others received it (and the pay raise it brings) who had fewer students, fewer favorable evaluations, fewer publications, and less well-subscribed classes. The denial was based on specific points culled from his writings that showed his conservative point of view. So his suit was about tenure only in the context of fighting the obvious point-of-view discrimination against a conservative. It was a important victory for our side.