We've all suffered frustration about writing assignments. Either on the receiving end, or perhaps now on the giving end, there can be a few distinctly discouraging aspects to teaching and being taught writing. The tough questions include: What do l correct and how do I give a grade? How much help is too much? Isn't the assignment clear enough? Why don't students find their own errors? Learn and avoid four teaching mistakes that contribute to this frustration: overcorrecting, holding back help, unclear assignments, and over-expectation.