I've never played scholar, but some general tips
-You have pvp specific moves that are very helpful
-You have your own lb to use when you need it
-cleric stance can't be used

As a healer just try to stick with your party, you're likely going to get targeted a lot as a healer. Be wary of people getting burst killed. A lot of times when someone takes a damage, lots of people will jump on that person to get the kill so it's something to take into consideration.
I'm sure there's more but I'm not the most experienced person so I'll let others do the rest.