I would like to go back to school... but my concentration is so poor I can barely read and retain information.

Have you tried to buy a book on "how to study", etc.? Many of us have bad study habits than can get in our way. Each person is different, so you may try several techniques before finding what works for you.

Maybe you lack the right motivation too. What do you want to do? Meds will not help you on tasks that require creative thinking either.

with jobs... it's hard now. Crisis. Keep looking and keep sending out your CVs...