I think people have covered levelling/dungeons etc, but for end game raiding you'll really need to up your DPS game. As much as some healers don't like the idea of being forced to DPS, if you want to do Alex Savage as a SCH, you WILL be DPSing. It's actually quite bizarre cause with my raid group, our optimum strategy for A1S is literally me DPSing the entire fight and only topping up tanks during the tank buster move. I feel like a DPS with a fairy xD but tbh I love being able to DPS with Scholar so it suits me perfectly.
While a WHM might be learning how to manage MP and control raid healing, as a SCH I always find myself looking for those moments where I can cleric stance and contribute to DPS. It seems like the optimum strategy for healers always becomes WHMs leaning towards solo healing with SCHs doing as much DPS as they possibly can.
