Verb conjugation of "infiltrer" in French

A word might have one meaning in Mexico, and a totally other meaning in Columbia or in Venezuela. Let me check the words that are already translated before doing anything. I will try to add the other points tomorrow.
The idea is to use the sourcing to get as much information as possible about learning abilities and disabilities in average. This way we can determine and forecast best practices for language learners based on some parameters.
I once had a lesson with a private teacher, but unfortunately she could not come regularly. She was always sick, then I have visited a school in Andalusia, which was worthless, since we talked only German.