The educational activities of Nikos Kotrokois are manifold.

The areas where he focuses his efforts are:

Advanced Music Theory, as teacher and director of the IHOMORFES Conservatory.

Choral Conducting at IHOMORFES and at the Musical Horizons Conservatory, under the artistic direction of Kostis Gaitanos.

Vocal Training, as teacher at the Holy Cathedras of Piraeus and N. Smyrni, at the IHOMORFES Conservatory and also as a member of the science team at the Voice and Swallowing Center of Athens until 2015 and os its successor team until today. Since 2017 he works as vocal coach for the cantors of the Holy Monastery of Vatopedi, and of the Docheiariou Monastery, both at Mount Athos.

Finally, he has taught in numerous seminars since 1994 in all of his areas of interest, both in Greece and abroad.