Sarah Palin's daughter Bristol has said that her baby-daddy Levi Johnston needs to go back to school.

Bristol appeared on 'The Tonight Show with Jay Leno' to talk about her upcoming appearance on 'Dancing with the Stars,' but the conversation inevitably turned to her former boyfriend Levi Johnston.

"He's changed. Night and day, definitely," the New York Daily News quoted Bristol as saying.

"The guy I fell in love with was a hard-working Alaskan man that didn't want to wear straight-legged jeans and boots and be chased by Radar," she added.

Johnston, a Playgirl model, is presently looking for a reality gig of his own, possibly as a candidate for Mayor of Wasilla, Alaska.

However, Bristol is unconvinced that Johnston is up for the challenge of mayor.

"He needs to get his G.E.D. He needs to move to Wasilla," she told Leno. (ANI)