mexico however still has the lowest percentage of top performers in mathematics in among oecd countries and the third lowest percentage among the participating countries with comparable data after indonesia with and tunisia with pisa results volume vtablev similarly of the canadian students who performed below level in over had not gone on to any postschool education by the age of by contrast more than half of the students who had performed at level as their highest level were at college or university students proficient at level in mathematics can employ basic algorithms formulae procedures or conventions