When my DCs started at school, there was only one or two dogs walked to school which was fine. Now the main exit gate is much busier with dogs on leads, and it's already busy with prams, toddlers and school age children.
Forunately my children are bigger now and cope better than they they were closer in height to most dogs and we haven't had any incidents at the school gate. I'm confident with dogs having grown up with large dogs, but both of my children have been scared entirely because of poorly controlled "friendly" dogs that have been permitted to jump up, lick faces in prams, raid picnics and bowl them over as young children- often the owner wasn't even in sight and even when they were, half weren't even apologetic. That has left both my children very wary around lively, jumpy dogs, especially my child with ASD. If I wasn't calm around dogs and balanced my children's fear with demonstrating how to behave around dogs, their reaction would be worse. It's a difficult irony that the panic reaction of children makes the dog's behaviour worse, and the owner is entirely responsible for preventing their dog from distressing children. Children can not be rationally responsible for their fear.
When we had to hold our youth group in the park because of Covid restrictions, every week there was an incident where a dog was allowed to run into the area we were using, and every time there was a small number of children distressed by that.
If you must walk your dog to school, it must be firmly under control. No jumping. No barking. No snapping. It's deeply unfair to the children who attend the school to be put at risk of making their fear worse by being forced to go past poorly controlled dogs. School is a place for children and their wellbeing is a priority. Dogs are an extra.
I like dogs... the well behaved ones with responsible owners. It's infuriating how much damage a core of sloppy owners can cause with their poorly controlled dogs.