Madrasa is the arabic word for school --- any school.
So he went to a school school. Literally "madrasa" translates to "place of books".
Just like Omar,the tent maker. Omar is the arabic word for
"Tent Maker". Tent maker the tent maker.
As for the distrust you have for the Islamic Community,
your distrust is well founded! The Islamics are out to convert the world to Islam either by teaching or the sword.
Look at the flag of Saudi Arabia --- crossed swords!!