different strokes, DS1 was a real boo hooer at pre-school, took weeks to settle him, but we got intoa good routine, his key worker would pick him up and they'd wave through the window at me, sometimes a sobbing face, but then the tears became less and stopped. He always STOPPED minutes after I'd gone. I used to wait in the car round the corner and ring them 15 mins later, which they did not mind at all, they just dealt with it the best way for both of us.
When he left pre-school to start big school he clung on to hiskey worker as he love pre-school so so much he did not want to leave!
DS2 has just started pre-school and he has shed not one tear, straight to the front of they queue, kisses me and off he goes, no problem.
So who knows why, perhaps it was me with DS1, first child nerves, not been around other kids much, and DS2 has been going into the same playground since birth so used to the setting and other kids, who knows.
The crunch factor is do you stay to comfort of just go. So tricky. In my experience from others, Mums who stay longer to comfort often make it worse for the child, calming and going setting them off all over again.
But you must trust your gut and take advice from your childcare provider as to what would be best.
You just gotta suck it and see, for want of a different expression!