Friends of Hogwarts

This is the tale of 4 friends, from 3 different houses, just trying to get through their time at Hogwarts, without getting expelled.
With a new Defense Against the Dark Arts teacher each year, and plently of cute boys around, there are many things that threaten the girls friendship.
And when the Chamber of Secrets is opened, and muggle-borns are being petrified, the girls worry about the safety of their muggle-born friend Annabeth. But having a Slytherin in the group, creates several blood related arguments, that threaten to tare the girls apart.
Having Slytherin's monster lurking around doesn't stop the flow of homework or lessons. So the girls still need to attend all of their lessons, including their favourite activity, the frog choir, which is the one thing that binds them all together, in times of stress.
Throughout their time at Hogwarts, the girls encounter; prisoners, triwizard tournaments, and a whole load of bizarre teachers- all with special connections to each of the girls...