Middle school different from secondary school
A middle school (also known as intermediate school, junior high school, junior secondary school, or lower secondary school) is an educational stage which exists in some countries, providing education between primary school and secondary school. The concept, regulation and classification of middle schools, as well as the ages covered, vary between and sometimes within countries.Canada
In Canada, the terms "middle school" and "junior high school" are both used, depending on which grades the school caters to. Junior high schools tend to include only grades 7, 8, and sometimes 9 (some older schools with the name 'carved in concrete' still use "Junior High" as part of their name, although grade nine is now missing), whereas middle schools are usually grades 6–8 or only grades 7–8 or 6–7 (i.e. around ages 11–14), varying from area to area and also according to population vs. building capacity.
Another common model is grades 5–8. Alberta, Nova Scotia, Newfoundland, and Prince Edward Island junior high schools typically include grades 7–9, with the first year of high school traditionally being grade 10. In some places students go from elementary school to secondary school, meaning the elementary school covers to the end of grade 8.
In Ontario, the terms "middle school" and "senior public school" (sometimes just grades 7 and 8) are used, with the latter being used particularly in the Old Toronto and Scarborough sections of Toronto plus in Mississauga, Brampton, and Kitchener-Waterloo. In many smaller Ontario cities and in some parts of larger cities,  most elementary schools serve junior kindergarten to grade 8 meaning there are no separate middle schools buildings, while in some cities (such as Hamilton) specific schools do serve the intermediate grades (i.e. grades 6–8 or grades 7–8) but are still called "elementary" or "public" schools with no recognition of the grades they serve in their name.
Quebec uses a grade system that is different from those of the other provinces. In Quebec, there is no middle school section. The secondary level has five grades starting after elementary grade 6. These are called Secondary I to Secondary V.Egypt
In Egypt, middle school precedes high school. It is called the preparatory stage and consists of three phases: first preparatory in which students study more subjects than primary with different branches. For instance, algebra and geometry are taught instead of "mathematics." In the second preparatory phase, students study science, geography, the history of Egypt starting with pharaonic history, including Coptic history, Islamic history, and concluding with modern history. The students are taught two languages, Arabic and English. Middle school (preparatory stage) lasts for three years.India
In India, Middle School is classified as Upper Primary (Class 6–8). Each state has its own State Board. Each has its own standards, which might be different from the Central Boards. In some institutions, providing education for 5th to 10th is known as a secondary school.The levels of education in India are: