According to PISA, the Programme for International Student Assessment, Brazil, on average, underperforms. Brazilian students score lower than the average in reading, mathematics, and science, the three categories of testing. Their scores have improved since 2000, the first year the test was taken. Since 2000, Brazil has started the Brazil Literate Program to lower the rate of illiteracy in those ages 15 and older. Brazil has also implemented the IDEP, the Index of Basic Education Development, which evaluates school flow and performance rates in the test. According to the website, the index is used to tell whether the educational system should be improved. The program is important in deciding public policy of the educational system. IDEP also led to the creation of the Social Mobilisation program which works to involve the entire community in the educational system. Several other committees have created programs in individual municipalities in order to curb the IDEP findings.