Season 1, Episode 4 Leaping to Conclusions

First Aired: December 21, 1988

A student's refusal to dissect a frog in biology class sparks a controversy among her peers. Miss Bliss: Hayley Mills. Zack: Mark-Paul Gosselaar. Screech: Dustin Diamond. Kelly: Tiffani-Amber Thiessen. Slater: Mario Lopez.

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  • Premiered: August 20, 1989
  • Rating: TV-PG
  • User Rating:4.59 out of 5 (99 ratings)
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  • Premise: Teens study, date and scheme at a California high school, where silly storylines didn't stop droves of kids from watching on Saturday mornings. The attractive cast included Mark-Paul Gosselaar as Zack, who comically addressed the camera (à la 'Dobie Gillis… (more)

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