Introduction

The Programme for International Student Assessment (PISA) is a global initiative that evaluates the educational systems of countries by measuring the skills and knowledge of 15-year-old students. The 2015 cycle of PISA introduced a new dimension known as the "Collaborative Problem Solving" (CPS) assessment, which evaluates students' ability to work together to solve complex problems. This note aims to understand the program by released documents and dataset. Trying to uncover valuable insights, and conduct meaningful analyses that reveal trends and patterns within the data.

Only main survey data are released, everything following are based on main survey.

• Overview
• Test format
• Structure of the assessment

Summary of released items

The official **dataset** contains 6 units with total 121 items. Overall 414498 records. Around 53 regions.

• 117 items can be futher analysed: “The dropped CPS items include: CC104104 and CC104303 in Meeting in the Park, CC102208 in The Field Trip and CC105405 in The Garden.” — Page 55 of PISA 2015 Technical Report (The theoretical competency of these four items is not provied)
• For all 117 items, the following information is provided
• 6 units with 117 items: (Unit name, cluster, parts, # of items)
• 3 competencies and 4 processes: Description and corresponding items
• PISA also give the level of each items based on IRT in Page 425 of PISA 2015 Technical Report
• They also provide procedual data like timing and number of actions.

Literature Review

English Version

Let’s take a deep look into English version and use GPCFA to analysis the effect size

• 13 regions used English version. Total 71595 records.
• Summary by “BOOKID” (test forms) — Get 21443 valid records with CPS been tested
• Missingness