Ditto, I think I found it harder than Ollie did! I was so close to tears on his first day (tried really hard not to show it though). And he got used to school really quickly. He's always been a kid that loves structure and routine though.
We had trouble with toileting for the first few weeks. At kindy he was used to being able to go whenever he needed. While the teachers totally understand little kids can't 'hold on' the kids do need to say something, which he wasn't. We spoke to his teacher and she would make sure she asked and encouraged him at least a couple of times a day. Then at the start of term 2 we introduced a sticker chart. After the first 2 days, he's been dry since and is confident about asking his teacher and going by himself.
So far I don't think anyone has been mean to him. He hasn't said anything and the teacher said he is building friendships within the class which is great.
Make sure you talk to the teacher regularly, and they can allay any fears you may have or put practices into place to manage any issues that may arise.
While it was hard 'letting go' of my baby, watching his growing confidence and independence is also such a reward