交換 こうかん様式 ようしきクラスじゃありませんでした
kōkan'yōshikikurasujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 交換様式クラス

1. Was not an exchange format class.; Was not a class for exchange students.

Past/Perfective
Negative
Polite
Terminal Form
Computing