There's no definitive answer to what percent of children get bullied in boarding schools. Studies on bullying prevalence vary widely depending on the methodology, the definition of bullying used, the specific school(s) studied, and the year the study was conducted. Some studies might focus on reported incidents, while others might rely on self-reported experiences, which can lead to differing results. Furthermore, bullying in boarding schools may be underreported due to fear of retaliation or a lack of trust in reporting mechanisms.
Therefore, any percentage figure you find would be an estimate and not necessarily representative of all boarding schools globally. While some research might suggest a particular range, it's crucial to understand the limitations of that data.