My HG DS attended K and 1 in a very poor school with many children who were not well prepared for school. In a way, this allowed his teachers to see him clearly for who he was. There were no helicopter special-snowflake parents jockeying for status and no one minded that he was given special work, excused from other work, and subject accelerated. I think the different environment allowed him to be seen simply as a child with different learning requirements. He was also so educationally different from most of his peers that pretending he was the same seemed silly. You might encounter this here and this teacher might be just practical about it, as his teachers were. Of course, there is no guarantee, but it can happen. I know of other parents who have had good experiences with gifted kids in low-SES schools.