Which characters appear in Bart Gets an F?

In the "The Simpsons" episode "Bart Gets an F," key characters include Bart Simpson, who struggles with his schoolwork; Martin Prince, Bart's academically gifted classmate; and Mrs. Krabappel, Bart's teacher. Additionally, Homer and Marge Simpson make brief appearances as Bart's parents. The episode also features Principal Skinner and other classmates, highlighting Bart's challenges and growth in academic performance.