North Penn students surprise retiring teacher with ABBA flash mob

Wednesday, June 19, 2019
LANSDALE, Pa. (WPVI) -- Students at North Penn High School in Lansdale, Montgomery County know how to give a sendoff.

They surprised retiring English teacher Sue Cassel who is an ABBA fan.
[Ads /]
They led her through the halls and outside the school, all while singing the band's biggest hits.
Copyright © 2024 WPVI-TV. All Rights Reserved.