While hundreds of students across the district have life-threatening allergies, the number of emergency medical treatments in Bellevue schools have fallen to almost none over the last two years.

Last school year, only a single doseage of medication was administered to combat a severe allergic reaction called anaphylaxis in a student with a life-threatening allergy. That’s an 89 percent reduction over the previous school year and a reduction of 94 reduction over the district’s highest number of allergic reactions requiring treatment in 2013-2014.

Almost 850 students in the Bellevue School District have life-threatening allergies. At its peak, 16 students suffered from anaphylactic shock. Four required an ambulance.

While the district has always done well with addressing students’ medical needs and allergies in particular, Sonja Reed, district lead nurse, said the reduction is in part a reflection of policy changes made over the last two years.

“We’ve aggressively worked on policy related to anaphylaxis. How food is provided, what teachers are doing … When we looked at the largest number of allergic reactions [in 2013-2014], we found that most of the students had been sharing food,” she said.

The spate of allergic reactions several years ago briefly led the district to eliminate snacks — a decision that upset many students and parents. That decision was revoked shortly thereafter.

Now, teachers are prohibited from using food items as rewards, incentives and for celebrations to avoid excluding students with allergies. The district has also increased faculty training and the distribution of information about food allergies present in individual schools.