This episode features Lorrie Mahaffey's final appearance as Jennifer.
This episode was filmed on January 26, 1979.
On the blackboard, there is a drawing of the heart which shows the left ventricle, but the word is misspelled "ventrical." During Potsie's "Pump Your Blood" number, the mistake has been erased.
Potsie's "Pump Your Blood" song was used in a St. Joseph's aspirin television commerical in mid-2004 through early 2005.
S 3 : Ep 20
Aired 2/3/76 (25:23)
S 2 : Ep 22
Aired 4/29/75 (25:17)
S 2 : Ep 18
Aired 2/25/75 (25:15)
S 2 : Ep 16
Aired 2/11/75 (25:28)
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