Source: Teaching Professor at NC State During the PhD, I was a TA and instructor on record for several classes. Schools may have some form of mentor teaching a

Source: Teaching Professor at NC State During the PhD, I was a TA and instructor on record for several classes. Schools may have some form of mentor teaching assistantship that lets you get experience teaching while in the program. I think I taught ~6 courses by the time I graduated. It can also help to position yourself in the "education" research space for your field. There is a strong CS education research space, so you can incorporate your classroom as your "lab", though you'll want to study up on Cognitive Sciences to ensure your findings support current literature. My publication count is much lower than my peers, but I was still able to receive several offers for teaching faculty positions. Teaching faculty positions are available, though not in as much demand as traditional research oriented profs. However, I know at least in CS there are several universities looking for them. Likewise, by situating yourself in the education space, you can land a research prof position while still focusing on education. If you get funding, then you can buy out course obligations so you can specialize in teaching a single class.