I have three felonies and will be able to get them expunged in two years. Should i wait till then to go to school or go now? Thanks!

If you can't get them expunged now, does that mean you are still on probation?
If so, your chances are zero, a company will hire you.

Some carriers will over look someone with a single felony as long as it is at least 5-10 years old. More than one will be difficult to overcome. You could speak with some carriers, but I would not expect any positive feedback as long as the felonies show up on your background check. More and more carriers are doing criminal background checks. Felonies are really frowned upon. You didn't mention the offenses, but with more than one it will be difficult. If it were me I would wait until you know they have been expunged. If everything is clear after the felonies come off, you should not have a problem finding a carrier. I assume that you have a clean MVR. That is also a criteria for driving for most carriers.