Middle school followed by high school
Bangladesh
In Bangladesh, middle school is not separated as in other countries. Generally, schools are from class 1 to class 10. It means lower primary (1–5), upper primary (6–10). Class 6–8 is thought of as middle school. Grades 1,2,3,4 and 5 are said to be primary school while all the classes from 6 to 10 are considered high school (as middle school and high school are not considered separate) while 11–12 (inclusive) is called college.1–5 is known as primary (Part of Primary School)
6–8 is known as lower secondary (Part of High School)
9–10 is known as secondary (part of High School)
11–12 is known as higher secondary also known as college.Mexico
In Mexico, the middle school system is called Secundaria and usually comprises three years, grades 7–9 (ages: 7 12–13, 8 13–14, 9: 14–15). It is completed after Primaria (Elementary School, up to grade 6: ages 6–12) and before Preparatoria/Bachillerato (High School, grades 10–12 ages 15–18).Montenegro
In Montenegro middle school refers to educational institutions for ages between 14 and 18, and lasts 3–4 years, following elementary school (which lasts 8 or 9 years). "Gymnasiums" are the most prestigious type of "middle" school.