I have two sons ages 3 and 1. We bring them to the daycare center every morning.
When we pick them up, my 3yo will say everything was fine and he liked it there and that it was nice playing with his friends. Sometimes he will say how this one other kid hit him. My son is generally rather friendly and usually not one to hit back, he tends to just get very upset and intimidated when other kids are mean to him. Either way, he'll say he's happy to go again tomorrow.
But in the mornings he'll ask right after waking up whether it is a weekday, and if yes, he'll try to do anything he can to not go. He'll refuse to get dressed, he'll say he's sick, he wont eat breakfast, he'll try to slip out and go back to his room. As these strategies don't work, he'll get more and more upset. When pressed, he'll say that the real reason he doesn't want to go is the other kid who hits him. Some days we manage to distract him and get going, but sometimes it'll end with one of us carrying him out the door while he's crying or screaming.
What can we do to improve this situation? At the daycare center they don't take it very seriously when we bring this up as they say that during the day everything is fine (I suspect they're not paying enough attention to notice the hitting incidents). As both of us have to work, we cannot take him out of daycare (and there is no other option where he could get a place within less than a year or so). Also, taking him out temporarily seems like a bad idea as breaks such as vacation have made the situation worse in the past, especially in the first few days after coming back.