The purpose of this question is to ask for your experiences using PISA released questions at classroom. How do you use them to improve the mathematical competencies of your students? How do you implement assessment of mathematical competencies when working with this kind of questions?
Update:
PISA is a program of the OECD. It is an acronym for 'Programme for International Student Assessment'. It is a triennial international survey which aims to evaluate education systems worldwide by testing the skills and knowledge of 15-year-old students. It develops tests which are not directly linked to the school curriculum. The tests are designed to assess to what extent students at the end of compulsory education, can apply their knowledge to real-life situations and be equipped for full participation in society. Fifteen-year-old students from randomly selected schools worldwide take tests in these subjects: reading, mathematics and science. There are also optional assessments (optional for the country which decides to participate in PISA) in Problem Solving and Financial Literacy. The students and their school principals also answer questionnaires to provide information about the students' backgrounds, schools and learning experiences and about the broader school system and learning environment.
You can find PISA released questions and more information in this link:
http://www.oecd.org/pisa/pisaproducts/pisa-test-questions.htm