DS is in primary school. An older child with moderate SN (they live locally, so we know some of the background) is harassing DS and other primary school children at the bus stop. The older child takes the same school bus, but has started secondary this year. DS is now happier being driven. Harassment seems to be pushing, near the road. Also restrictive 'hugs', which are unwelcome and not reciprocated (I mean it is not back and forth).
Older child is never with their peers and is a boy (currently presenting as a boy), who sometimes presents as female. Rural area and this likely contributes to isolation.
DS is popular, sporty, etc., but just got through their first encounter with a bully in the classroom.
Don't want to deal with the parents in case it backfires (would do if did not live close in a small community). Don't want to speak with other parents as the last thing the older child needs is more isolation. Do we just avoid or speak with the school/s - will do if it escalates, but have been on their case recently regarding the classroom issue. At the moment driving DS and telling him to stay away from the older child, but to be polite about it.