Believe it or not, I know EXACTLY how you feel. I was teased by my whole class and rejected by teachers for my awkward behaviors. I never got the proper elementary education I should have. I'm 22 now, high school graduate who passed just barely on a whim of things and unable to go to college.
You could try getting those math or english workbooks they have for kids at wal-mart. Someone had suggested that to me and it might be something fun that is good to stimulate your brain. I'm not really sure what you are looking at since I don't know where you feel your education level is at. I know mine sucked majorly and its made a huge impact on me having a job or going to college, aside from having extremely sever anxiety and stress issues.
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Diagnosed with an autistic disorder (Not AS but mild to moderate classic Autism), ADHD, Learning Disability, intellectual disability and severe anxiety (part of the autism); iPad user; written expressionist; emotionally-sensitive