I was quite open within my school community but then I teach secondary girls so that may be different. I thought it was important for teenage girls to know about issues such as this. I also received an enormous amount of support from the school and staff. Couldn't have done it without them.
Having said that, my daughter was in prep at the time but even there, the wider school community knew, too. They were also supportive and then my daughter felt free to talk about what her mum was going through, too.