How to make your high school diploma valid in Poland?

Dear Students,

A meeting regarding validation of your high school diploma (process called "nostryfikacja") in Poland is going to take place on Fri, 18 Oct, at 12:00 in room 404.

This message concerns mostly students who have non Polish and non-IB high school diplomas, especially those who joined WISP in 2013/14 academic year, but any other student who would like to find out how to obtain "nostryfikacja" is welcome to participate. Students with Polish diplomas are also welcome to take part. You might be of great help for your non-Polish speaking classmates.