got this of good old wikipedia
the academic school year begins in September 1 and ends in the first Friday after June 18. There is a Christmas break in December which lasts till the New Year's Day. There are also another two weeks of break after the Christmas break. Every province has the winter's break at a different time. Winter break divides school academic year into two semesters.
Most universities starts their courses in October 1 and ends first term in January. Before the second term begin there is an examination session. Second term starts just after the end of examination session and finishes in the first days of June. After it next, usually month long, session begins. In some facilities academic term begins several days before October 1.
the only calendar i could really find on the internet was dated 2005/2006 time
have you thought about emailing the areas in question town halls that handle education and getting the information that way as well :)
i also found this is you need it
http://www.expatfocus.com/expatriate-poland-education-schools
top of page