Jeff adversities in 8th grade was to pass the state math test to pass 8th grade, his friend was diagnosed with cancer and died, and brother left for Africa.He overcame these adversities by staying positive,studying with the pact,protesting towards the school,having his dad and Tad help him with work.He walks to Tads grave all the time to talk to him.
"Meanwhile. I kept going to my after school classes AND getting tutored." This means he is constantly trying to get better at math and studying and writing.
Tad adversities in 8th grade he gets cancer again its chronic myelogenous leukemia. He overcame this by going for treatment at the hospital. Has Yvonne transfer bone marrow to him but it failed and he sadly died.