The total score of the 9th-grade students in Sanming this year is unavailable without specific data. Typically, such information would be compiled by educational authorities or schools and may not be publicly disclosed in its entirety. The total score would be the sum of individual scores across various subjects, including mathematics, science, language arts, and social studies, depending on the curriculum and assessment methods used.

To provide a comprehensive analysis, it is essential to consider several factors that influence the total scores of 9th-grade students in Sanming. Firstly, the academic rigor of the curriculum plays a significant role. If the curriculum is challenging, students may achieve lower average scores compared to regions with less rigorous curricula. According to the National Assessment of Educational Progress (NAEP), the average scores for 9th-grade students in mathematics and reading have been relatively stable over the past decade, indicating a consistent level of academic performance across the United States.

Secondly, the quality of education provided in Sanming can impact the total scores. This includes the availability of resources, teacher qualifications, and school infrastructure. Data from the U.S. Department of Education's Condition of Education report shows that schools with higher percentages of students from low-income families often have lower average scores. However, this does not necessarily reflect the performance of individual students within those schools.

Additionally, the socio-economic status of the students' families can influence their academic performance. Research indicates that students from families with higher incomes tend to perform better academically compared to those from lower-income families. This is due to various factors, including access to educational resources, parental involvement, and the overall stability of the home environment.

In conclusion, without specific data, it is impossible to determine the total score of the 9th-grade students in Sanming this year. However, it is evident that a combination of curriculum rigor, educational quality, and socio-economic factors contribute to the overall academic performance of students. To obtain an accurate and comprehensive understanding of the total scores, one would need access to detailed school and student-level data, which is typically not publicly available.