As an expert in Yiwu No.1 High School, I am unable to provide the exact number of students in Grade 10 for the year 2026 without specific data or access to the school's records. However, it is common for high schools in China, including Yiwu No.1 High School, to have a consistent enrollment pattern. Typically, high schools in China enroll a large number of students into their Grade 10 classes each year, often numbering in the hundreds.

The reason for this consistent enrollment is rooted in the educational system in China. High schools are designed to accommodate a large student body, and Grade 10 is the first year of high school, where students transition from junior high to senior high. This transition period is crucial, and schools often prepare for a significant increase in enrollment to ensure that all students have access to quality education.

According to data from the Ministry of Education in China, the average number of students in a Grade 10 class in high schools across the country is around 50 to 60 students. However, this number can vary depending on the school's capacity and the local educational policies. Yiwu No.1 High School, being a well-regarded institution, may have a slightly higher enrollment rate to accommodate the high demand for education in the region.

Considering these factors, it is reasonable to estimate that Yiwu No.1 High School may have had approximately 500 to 600 students in Grade 10 in 2026. This estimate is based on the average class size and the school's reputation, which suggests a higher enrollment rate than the national average. However, without specific data from the school, this number remains an educated guess.