Hello Ana & Joao. Thank you for your questions. There are many reasons we do not disclose a cut score to our examinees but here are two of the biggest factors we considered when choosing to disclose our cut score or not.
Confidentiality and Fairness - Disclosing the cut score could potentially enable candidates to game the system by narrowly focusing on the exact passing score rather than genuinely mastering the material.
Psychometrics - Determining a fair and valid cut score is a complex process that involves psychometric analysis. Psychometricians take into account factors like question difficulty, candidate performance, and exam reliability to establish a passing score. These calculations may not lend themselves to a simple, easily communicable number.
I hope that gives you a better understanding of why we do not disclose the cut score.