What term describes a problem or program that affects few children?

The term that accurately describes a problem or program affecting few children is "low incidence." In the context of education and special needs, low incidence refers to disabilities or conditions that occur infrequently among the general population of children. This can include rare disorders or specific learning disabilities that impact a small percentage of the student population.

In contrast, other options reflect conditions that are more common or widespread. For example, "high incidence" refers to issues that are prevalent and affect a larger number of children, such as learning disabilities like dyslexia or ADHD. "Widespread issue" and "common condition" also imply a broader impact on multiple children, which distinguishes them from the concept of low incidence. Thus, the correct term highlights the rarity of certain conditions among children.