The present study concerns 39 samples out of 150 in total produced by one bilingual student of a primary school in Germany and including both simple and short sentences as well as more complex or in some cases complete paragraphs. The language of writing is German, while the mother tongue is Greek. The purpose of the research is to highlight the ease or difficulties that a bilingual student faces in producing written language and which factors (e.g. vocabulary, grammar, syntax, level of text difficulty) influence the final result. Tableau Public was used for the statistical analysis, while all 39 samples were first digitized manually in Word format. They were then analyzed with the Flesch-Kincaid and Gunning Fog Readability formulas, the results of which were carefully transferred to an Excel spreadsheet. The final results showed that there is a relative comfort in the use of more advanced vocabulary as well as the use of subordinate clauses compared to the age of 8-11. The creation of a database would perhaps contribute even more to the academic and educational community in terms of a more fair evaluation of texts produced by bilingual primary school students.