Education in Iran in the context of "Secondary school"

Iran has made considerable advances in science and technology through education and training, despite international sanctions in almost all aspects of research during the past 30 years. Iran's university population swelled from 100,000 in 1979 to 4.7 million in 2016. In recent years, the growth in Iran's scientific output is reported to be the fastest in the world.

The supreme leader of Iran, also referred to as the supreme leader of the Islamic Revolution, but officially called the supreme leadership authority, is the head of state and the highest political and religious authority of Iran (above the president). The armed forces, judiciary, state radio and television, and other key government organizations such as the Guardian Council and Expediency Discernment Council are subject to the supreme leader. According to the constitution, the supreme leader delineates the general policies of the Islamic Republic (article 110), supervising the legislature, the judiciary, and the executive branches (article 57). The current lifetime officeholder, Ali Khamenei, has issued decrees and made the final decisions on the economy, the environment, foreign policy, education, national planning, and other aspects of governance in Iran. Khamenei also makes the final decisions on the amount of transparency in elections, and has dismissed and reinstated presidential cabinet appointees.

The office was established by the Constitution of Iran in 1979, pursuant to Ayatollah Ruhollah Khomeini's concept of the Guardianship of the Islamic Jurist, and is a lifetime appointment. Originally the constitution required the supreme leader to be Marja'-e taqlid, the highest-ranking cleric in the religious laws of Usuli Twelver Shia Islam. In 1989, however, the constitution was amended and simply asked for Islamic "scholarship" to allow the supreme leader to be a lower-ranking cleric. As the Guardian Jurist (Vali-ye faqih), the supreme leader guides the country, protecting it from heresy and imperialist predations, and ensuring the laws of Islam are followed. The style "Supreme Leader" (Persian: رهبر معظم, romanized: rahbar-e mo'azzam) is commonly used as a sign of respect although the Constitution designates them simply as "Leader" (رهبر, rahbar). According to the constitution (Article 111), the Assembly of Experts is tasked with electing (following Ayatollah Khomeini), supervising, and dismissing the supreme leader. In practice, the Assembly has never been known to challenge or otherwise publicly oversee any of the supreme leader's decisions (all of its meetings and notes are strictly confidential). Members of the Assembly are elected by people in elections, and are approved by bodies (the Guardian Council) whose members are appointed by the supreme leader or appointed by an individual (Chief Justice of Iran) appointed by the supreme leader.

K–12, (from kindergarten to 12th grade) is an English language expression that indicates the range of years of publicly supported primary and secondary education found in the United States and Canada, which is similar to publicly supported school grades before tertiary education in several other countries, such as Armenia, Australia, China, Ecuador, Egypt, India, Iran, the Philippines, South Korea, and Turkey. K–12 refers to the American system which affords authority to local intersectional "districts" which may be specific to a municipality, county, or several regions, depending on population and proximity.