There are three major educational paths that can be followed to become a Registered Nurse. A student must successfully complete one of these degree programs to be eligible for the NCLEX-RN licensing examination. Once a student passes this exam they are able to practice as a Registered Nurse (RN).
In the ongoing TV series Smallville, Clark Kent (Tom Welling) is initially portrayed as being a shy teenager who is very unsure of himself. At the start of the series he is unaware of his origins or of any future powers he will develop.
Initially, while Superman does make brief appearances (played by an uncredited Kevin Caliber) his face is always obscured or off-screen and his voice not heard, with Kal-El only appearing as a child, and the guise of Clark Kent never seen at all (but still communicating with Kara, via text messages).