The Global Index of Cognitive Skills and Educational Attainment compares the performance of 39 countries and one region (Hong Kong) on two categories of education: Cognitive Skills and Educational Attainment. The Index provides a snapshot of the relative performance of countries based on their education outputs.List of indicators Main sourceMain year1. Cognitive Skills 1.1 Grade 8 1.1.1 Reading Literacy - PISAOECD - PISA report20091.1.2 Mathematics Literacy - PISA and TIMSSEIU based on IEA and OECD data 1.1.2.1 PISA - Mathematics LiteracyOECD - PISA report20091.1.2.2 TIMSS - Mathematics AchievementIEA - TIMSS and PIRLS International Study Center20071.1.3 Science Literacy - PISA and TIMSSEIU based on IEA and OECD data 1.1.3.1 PISA - Science LiteracyOECD - PISA report20091.1.3.2 TIMSS - Science AchievementIEA - TIMSS and PIRLS International Study Center20071.2 Grade 4 1.2.1 PIRLS - Reading Literacy AchievementIEA - TIMSS and PIRLS International Study Center20061.2.2 TIMSS - Mathematics AchievementIEA - TIMSS and PIRLS International Study Center20071.2.3 TIMSS - Science AchievementIEA - TIMSS and PIRLS International Study Center20072. Educational Attainment 2.1 Literacy rate 2.1.1 Literacy rate (15 and over), %UNESCO Institute for Statistics (UIS)20102.2 Graduation rate 2.2.1 Graduation rate at upper secondary level OECD 20102.2.2 Graduation rate at tertiary level OECD 2010