This document is an English-language abstract (approximately 1,500 words) of an analysis of tests given to newly enrolled first graders in Zagreb public schools. The analysis of the results of the investigation are presented into three sections: reading, mathematics, and social studies. The aim of the examination in the rudiments of literacy was to discover how many could read and write, read only, how many knew the alphabet, or parts of it. The results of the investigation into mathematical notions showed that the newly enrolled pupils had a very broad grasp of this field. Testing their knowledge of nature study and social studies covered the area of their home, nature and man's work in the child's neighborhood, the most important institutions, the notions of village, town, the country's name, the time of day, where they were, personal hygiene and current events. From the results of the tests as a whole, it can be said that by the time they reach school enrollment age, the children from the district studied have achieved the mental maturity for regular schooling. Within the urban area of Zagreb, this is largely the outcome of parental upbringing, because 88% of these children do not attend preschool. (Author/GDB)