Any more information on Tang China's level of education?

Displacing the old method of selecting talented people, the imperial examination system was a fairly equitable testing system to select officers for the feudal court. There were usually four subjects existing in different times, including 'Jinshi', 'Mingjing', 'Mingfa' and 'Mingyu'. The examination of the highest-grade was called 'Sheng Shi' (the national exam) which was held annually by the Shangshu Sheng in the capital city Chang'an (currently Xian). Those who were selected to attend Sheng Shi were called 'Ju Ren'. Examinees that passed the 'Sheng Shi' were called 'Ji Di'. Especially, the one who got the first place in the exam was entitled as 'Zhuang Yuan'. All the 'Ji Di's were qualified enough to be further judged by Li Bu who decided if they could be given an official title.