DUBAI — Iran has banned the teaching of English in primary schools, a senior education official said, after Islamic leaders warned that early learning of the language opened the way to a Western “cultural invasion.”

“Teaching English in government and nongovernment primary schools in the official curriculum is against laws and regulations,” Mehdi Navid-Adham, the head of the state-run High Education Council, told state television late on Saturday.

“This is because the assumption is that, in primary education, the groundwork for the Iranian culture of the students is laid,” Mr. Navid-Adham said, adding that noncurriculum English classes might also be blocked.

The teaching of English usually starts in middle school in Iran, around the ages of 12 to 14, but some primary schools below that age also have English classes.