In about 120-150 words, summarise the information in the table below.

Sample 1:

The table provides data on the number of schools in Vietnam from 2019 to 2021, categorized into upper secondary, lower secondary, and primary schools. From 2019 to 2021, there was a slight increase in the number of upper secondary schools, rising from 2,371 to 2,380. However, there was a decrease in both lower secondary and primary schools during the same period. Lower secondary schools decreased from 9,047 in 2019 to 8,744 in 2021, while primary schools decreased from 12,961 to 12,527. Overall, the trends indicate a slight fluctuation in the number of schools, with some categories experiencing minor increases and others showing slight declines over the three-year period.

Sample 2:

From 2019 to 2021, there were fluctuations in the number of schools across different levels in Vietnam. The number of Upper Secondary Schools saw a slight increase each year, from 2,371 in 2019 to 2,380 in 2021. In contrast, Lower Secondary Schools decreased from 9,047 in 2019 to 8,744 in 2021, showing a steady decline over the period. Similarly, Primary Schools also decreased annually from 12,961 in 2019 to 12,527 in 2021. These trends indicate a slight growth in upper secondary education facilities alongside a gradual reduction in lower secondary and primary school numbers. These changes likely reflect demographic shifts, educational policies, and adjustments in school infrastructure development across Vietnam during this period.

Sample 3:

Over the span of 2019 to 2021, Vietnam experienced varied trends in school numbers across different educational levels. The count of Upper Secondary Schools showed a marginal increase annually, rising from 2,371 in 2019 to 2,380 in 2021. In contrast, Lower Secondary Schools saw a steady decrease from 9,047 in 2019 to 8,744 in 2021, while Primary Schools also declined slightly from 12,961 to 12,527 during the same period. These changes illustrate a pattern of growth in upper secondary education facilities alongside a reduction in lower secondary and primary schools, possibly influenced by demographic shifts or educational policy adjustments. The data underscores the evolving educational landscape in Vietnam, reflecting efforts to adapt school infrastructure to changing population dynamics and educational needs over the surveyed years.