This is a book that I read as in late elementary/middle school (around mid 1990s). It was a paperback (mass market) novel of my aunt's and it seemed like it could have been published in the 80s to early 90s.
It is set in a fairly modern world. They referred to cars, desktop computers, telephones, etc. I recall that the premise is a boy (somewhere in the 10-15 age range) that discovers that he has a bit of control over magnetism. I think he is newly orphaned and is now living with someone new that he doesn't know very well.
A few details that I remember is when he is starting to learn about his powers, he practices lifting paperclips and having them stick to his finger (like to a magnetized screwdriver). For some reason I think his name starts with an "M".
I also recall a scene towards the end of the book, where the protagonist is crouching behind/under a desk and watching the antagonists as they are doing something. He ends up using his magnetism to save the day in a somewhat spectacular fashion, but couldn't say specifically how.
This is not a young Magneto, though.
Does anyone know what this could be?