I've found a studio in Lodz which may provide some lessons in English. Below is their Web page: miedzioryt.pl/606887727/00001.html
and the list of workshops the school is providing:
engraving workshop
- etching
- aquatint
- drypoint
- copperplate
- mezzotint
- soft etching ground
- sugar aquatint
- woodcut
- linocut
- dictionary
- price list
art workshop
- painting
- drawing
- price list
- students' works
atelier
- foto
- engraving
- painting
- drawing
In some other cities each year (mostly summers) different workshops are organized, but their schedule is shown roughly a month before start.