Quick answer — Kumiko Nakane voices Kyoushi in Humanity Has Declined, Mrs. Ishihara in Yamada's First Time: B Gata H Kei, Mrs. Kosuda in Yamada's First Time: B Gata H Kei and 1 more characters.
Kumiko Nakane voices Kyoushi (Humanity Has Declined), Mrs. Ishihara (Yamada's First Time: B Gata H Kei), Mrs. Kosuda (Yamada's First Time: B Gata H Kei), Suugaku no Sensei (Recently, My Sister Is Unusual).
Kyoushi is voiced in Japanese by Kumiko Nakane.
