To Become, To Teach

Harry is struggling with a desire to teach, since his Head of House won't support the endeavor. Snape steps in and offers to have Harry work as an assistant in his classroom. Now Harry has to try and reconcile this new side of Snape he's begun to glimpse in private with the same snarky git he's always been in public. All while dealing with a life-changing decision, of course. SSHP