<p>for tenureship, it's mostly depended on what they have accomplished during their time as a professor and, especially, a researcher at the university. Also, it depends on the department. For example, the department chair of UT CS said that our CS department prides itself in tenuring most of the professors they hire. </p>
<p>Believe it or not, there are upsides to working with non-tenured professors. They will drive you hard. Thus, you will publish many papers as a result.</p>