The kids are preparated for the first day of classes in Professor Jirafales's school. Señor Barriga arrived in the vecindad without being hit, since El Chavo had gone to the school with Quico and Popis, and ask Don Ramón to take his son, Ñoño, to the school. The kids makes many confusions in the school and, in the end, nobody learned, also, nobody can answer an easy question about pearls. Remade in 1976 and 1979. First appearence of Ñoño, Popis and Godinez. Special guests: María Luisa Alcalá as Malicha, Martha Zavaleta as Elizabeth and Ángel Roldan as Cándida.
Elenco: Roberto Gomez Bolaños , Carlos Villagran , Édgar Vivar , Florinda Meza , María Antonieta de las Nieves , Ramon Valdes , Rubén Aguirre , Angelines Fernández , Horacio Gómez Bolaños , Raúl Padilla .