Facts of Life not only used the set of Coed Fever, but there are several other tie ins between the two shows.

* Both series were about school life.

* Alexa Kenin made an appearance in a Facts of Life episode (New York, New York) and was a costar of Molly's in Pretty in Pink.

* Heather Thomas was a costar of Felice in Zapped.

* Both had a resident house mother and a resident house feminist.

Of the little I know from seeing the intro online:
-Both showed the characters names under the actors in the intro