<Tr> <Td_colspan="7"> Jessie turns to caffeine pills as a result of the pressure with midterms and her singing group, ignoring Slater's warning that the pills can damage her health . When Zack finds out about her problem, he cancels her performance and rushes to her side . </Td> </Tr> <Tr> <Th> 39 (26) </Th> <Td> 10 </Td> <Td> "Model Students" </Td> <Td> Don Barnhart </Td> <Td> R.J. Colleary & Michael Poryes </Td> <Td> November 10, 1990 (1990 - 11 - 10) </Td> <Td> 6340 </Td> </Tr> <Tr> <Td_colspan="7"> Zack convinces Belding to fire the nerds who run the school store so that the gang can reopen it as a "cool" store . Unfortunately, no one wants to come in; so as a scheme to attract customers, Zack and Screech secretly take pictures of the girls' swim team to sell in "The Girls of Bayside" calendars . A professional model photographer happens to see the calendar, and invites the girls for a professional photo shoot; but only Kelly is picked for an on - location shoot in Paris, which leaves Zack out in the cold . </Td> </Tr> <Tr> <Th> 40 (27) </Th> <Td> 11 </Td> <Td> "1 - 900 - Crushed" </Td> <Td> Don Barnhart </Td> <Td> Brett Dewey & Ronald B. Solomon </Td> <Td> November 17, 1990 (1990 - 11 - 17) </Td> <Td> 6335 </Td> </Tr>

Saved by the bell season 4 episode 22