DTNG FASHION
S1E5: Parents Day
Aired: 2001
Mr. Raditch, in a usual suit, is serving as the complaint department for Emma and her issues with News About Kids.
DTNG FASHION
S1E1: Mother and Child Reunion Part 1
Aired: 2001

Don’t worry, Mr. Raditch is still at it! And also… still wearing suits and ties. He’s a formal guy.
DH FASHION
DH S2E13: One Last Dance
Aired: 1991

Raditch is seriously no fun, even when he’s transformed into Rockin Rompin Raditch. But yeah, the last time we see him (for now), he’s still not being fun, he’s telling us (IN A SUIT of course) that Degrassi is gonna shut down for a year.
DH FASHION
DH S2E7: The All-Nighter
Aired: 1990

Mr. Raditch is announcing that the cops are gonna be digging through everyone’s lockers for drugs, and he is wearing – what else – a suit.
DH FASHION
DH S2E2: Bad Blood Part 2
Aired: 1990

LOL here’s Raditch lecturing us about destroying the condom machines, dressed in a typical Raditch suit.