Judge weighing sentence for Michigan school shooter described as neglected, mentally ill

Teenage Michigan high school shooter pleaded guilty to murder, terrorism for 2021 shooting that killed 4 students, injured 7.
Because he was 15, automatic life sentence is unconstitutional; judge considering mental health, upbringing, maturity.
Psychologist described shooter as neglected "feral child" exhibiting psychosis; believes he can be rehabilitated.
Shooter left behind writings showing mental distress; parents charged for providing gun, ignoring needs.
Judge to decide minimum 25-40 year sentence or possibility of parole after testimony concluding.