I used the following expression and it worked well with the form I sent but it did not work in the "Bad" thing form.
=IIf([ViolationRate]=1,"Extremely Low",IIf([ViolationRate]=2,"Low",IIf([ViolationRate]=3,"Medium",IIf([ViolationRate]=4,"High",IIf([ViolationRate]=5,"Extremely High")))))