C.,
In my years of teaching and working with young children through teens and even my own daughter. The first step is to watch and record what occurs before the undesired behavior happens. Yes, painless to get the answer but helpful to see where the behavior stems from. I have had to do this lately with my own child who is five. For what to me seems at first seperation anxiety was not at all seperation anxiety. It was actully uncomfortable situations, ie children not acting nice, music to loud at dance class, and even sometimes just her being a toot to get her way. Crying is usually the first sign of the inabillity to communicate and or not feeling secure in a situation. Sometimes my little one gets involved so fast to where she is headed that she gets upset because she didn't say goodbye or give me a hug or kiss. Hang in there. I have a good friend who always says this is a phase, and it too shall pass.