Opos Profes is an application that enables us to track our progress in preparing the agenda and make quick calculations on success rates and expected in the draw for topics in the oppositions for the Body of Secondary School Teachers, Music Teachers values and Performing Arts Teacher Corps, Technical Teachers Training and Teaching of Official Language Schools. We can also perform simulations of draws and see how, on average, our expectations are met. Clicking on each item, we indicate our degree of knowledge about it, which can be: green (low), pink (medium) or red (low) This information will be reflected in the results obtained in the simulations draw as expected values in them To enter values into the calculator just move a few sliders (number of issues on the agenda, number of subjects studied) and select the number of subjects drawn randomly For more information go to: https://oposprofes.blogspot.com.es/