Which primary prevention activity should a school nurse plan for the school year?

Monitoring the immunization status of students is a crucial primary prevention activity that a school nurse should prioritize. Primary prevention focuses on preventing health issues before they occur, and immunizations are a vital aspect of this strategy. By ensuring that students are up to date with their vaccinations, the school nurse helps to protect individual students as well as the broader community from the spread of infectious diseases.

Immunizations not only safeguard children's health but also contribute to herd immunity, which is important in preventing outbreaks of vaccine-preventable diseases within the school population. Regularly checking immunization records can help identify students who may be at risk of not being vaccinated, enabling timely action to catch them up on necessary vaccinations thereby reducing the risk of disease transmission.

The other options, while important, fall into different categories of intervention. Referrals for students with asthma, providing first aid, and conducting hearing screenings are indeed important aspects of health services in schools, but they tend to be more reactive or secondary/tertiary in nature, addressing existing health issues or identifying conditions rather than preventing them outright.