'Teen Mom' Amber Portwood -- Facing 2 Years in Jail for Being a Crappy Person

"Teen Mom" Amber Portwood could end up in the slammer for 2 years after allegedly violating virtually ALL of the terms of her probation -- including staying sober in public ... and not beating people up.

According to court docs filed in Indiana, obtained by TMZ, Amber's probation officer claims the 21-year-old former "Teen Mom" committed a laundry list of violations:

-- "Failure to behave well in society" -- namely, drinking too much and hitting a person at a restaurant last month
-- Failure to obtain a GED
-- Failure to complete 6 months of anger control evaluation and classes
-- Failure to pay probation fees
-- Failure to set up a $10,000 college fund for her baby daughter

Amber was sentenced to 2 years in jail after being convicted of beating the crap out of her baby daddy Gary Shirley -- but the sentence was suspended on the condition that she do all of the above.

Amber's due back in court for a hearing in January, when she'll have the opportunity to explain herself. If the judge doesn't buy it, he or she could throw the book at Amber.