Deletion of Karolcia

Comment: meets , ie. "4.The book is, or has been, the subject of instruction at two or more schools,6 colleges, universities or post-graduate programs in any particular country." as it is required reading in Poland classes I to III, see http://redmine.nowoczesnapolska.org.pl/projects/wl-publikacje/wiki/Lista_lektur_wed%C5%82ug_spisu_MEN here, tks to Piotrus above and Polish wikipedia, their article on the book is https://pl.wikipedia.org/wiki/Karolcia_(powie%C5%9B%C4%87) here
Stance: keep
Cited policy: Wikipedia:Notability (WP:NBOOK)