"Shoot the teacher" by David Belbin. Includes personal comment

During the couple of days that pass in this book, lots of
things happen. A boy in his mid teens becomes to heavy a
burden for his mother to carry. She kicks him out. Her
divorced husband gets to take care of Adam. Adam and his
father, who Adam calles Simon, move to a new place with a
new school where Simon is a teacher. The very first day
they're involved in a shooting. But there is more to come!
Three people are shot and killed in only a few days. There
are many theories of hwo comitted the killings. Simon is the
main suspect, however he's found innocent. Instead the find
that the murde…