Who’s the Winner?

Five students have just completed a logic contest. Lois Lang,  a school reporter and last year’s logic contest champion, asked for an interview.

Oh, this is giving me a headache!

Th students decided to test Lois Lang. Each student agreed to make one true and one false statement during the interview.

Frances: Kai was second. I was fourth.
Leyton: I was third. Charles was last.
Denise: Kai won. I was second.
Kai: Leyton had the best score. I came in last.
Charles: I came in second. Kai was third.

Help Lois Lang determine the winner.

Adapted from Discovering Geometry