In the study of migration and bilingualism, Persian is, for many children of Iranian immigrants, a heritage language: a language passed down through family and cultural background while another language dominates their schooling and social world.
The term is not the same as mother tongue. A mother tongue is usually the first language learned in childhood; a heritage language may lose its dominant place very early, sometimes before the child can read a word of it.
For Iranians, this is not merely a question of language teaching. More than four decades of political, social and economic emigration have built a multigenerational society outside Iran, one now entering its third generation.
The question is no longer how many Persian words the children know. It is how much of the language, the family memory and the direct connection to Iran will reach the generations after them.
One generation weakens a language; the next can lose it
Starting school is one of the deepest turning points in a child's linguistic life. The host country's language is not just the language of lessons; it becomes the language of friendship, play, jokes, music, the internet and most of the child's social world. Even in a family where the parents speak Persian at home, the real share of Persian in the child's day shrinks, steadily and without anyone deciding it should.
Studies of Iranian families abroad find the same gap from the parents' side. In interviews conducted by sociolinguist Khadij Gharibi and her colleagues with Iranian households in the United Kingdom and New Zealand, and in similar research in the Netherlands, parents express a deep commitment to passing Persian on; one parent in the UK study put it simply: "You are Iranian even if you were born on the moon." Yet the same studies document a persistent distance between what parents believe and what daily practice at home actually delivers.
The shift rarely happens suddenly. First the child understands Persian and answers in Persian. Then she still understands her parents but replies in the dominant language. Later, Persian narrows to family matters and daily routine, while feelings, schoolwork and personal disputes migrate to the other language.
Nor are understanding, speaking, reading and writing a single skill. A person may understand Persian almost completely yet grope for words when speaking, or speak fluently yet be unable to read a simple text. At that point, direct access to Persian literature, media, history and much of the written world of the language closes too.
The experience of other immigrant communities shows how deep the shift can run within two or three generations, a pattern sociolinguists have described since Joshua Fishman's classic model of three-generation language loss.
In the United States, 89 percent of first-generation Latino youth and 79 percent of the second generation report speaking Spanish well; in the third generation the figure falls to 38 percent, and only 26 percent report strong reading and writing.
Canadian data show the shift happening inside the family itself: in households where both immigrant parents shared the same non-official mother tongue, 24.4 percent of children used only English or French at home, against 2.5 percent of their parents.
These numbers are not about Iranians and cannot be transferred to them directly. But the pattern they draw is unambiguous: a language's strength in the first generation is no guarantee it will reach the third.
When the shared language shrinks, the hard conversations shrink with it
The consequences are not only cultural. One of the most consequential facts of immigrant family life is the gap that can open between the linguistic reach of parents and children.
A child usually learns the host country's language faster and deeper than her parents do. A father or mother may handle the new language perfectly well for work and errands, yet still feel a memory, an emotion or a complicated thought most precisely in Persian. The child may lack sufficient Persian in exactly those places.
In childhood the gap barely shows. School, food and tomorrow's plans need only a narrow band of language. Adolescence demands other conversations: anxiety, love, identity, discrimination, gender, politics, the future, the family's own disputes.
A shrinking common language does not by itself produce a family crisis, and the difficulties of immigrant families cannot be reduced to language. Economics, the migration experience itself, generational difference and social pressures all play their part. But the more complicated the conversation, the more the linguistic ceiling makes itself felt.
In Iranian families, the bond with the older generation carries its own weight. A child with limited Persian can manage daily talk with her grandparents. Hearing the story of a life, the memory of an emigration, an argument about history, is harder.
For a community whose modern experience is knotted together with revolution, war, repression, protest and wave after wave of departure, this is not only about preserving literature and culture. Language is one of the principal carriers of family and historical memory. The narrower it becomes, the more the next generation's access to its own family's lived experience will depend on summaries, and on translation.
The third generation: who will teach Persian, and with which Iran?
About the coming generations there is still no comprehensive data. Nobody knows how many Iranian children abroad understand Persian, how many speak it, how many can read and write it. Even the size of the diaspora resists precise measurement, because countries classify people differently, by birthplace, citizenship, ancestry, ethnicity or language.
Yet the third generation's challenge is already visible in outline. The first generation typically carried complete Persian out of Iran. The second may hold a reduced version: strong comprehension, weaker speech, little literacy. When that generation becomes parents, its narrower Persian is no longer a private matter; it directly constrains what can be passed to the next child.
For Iranians, teaching the language carries a political complication too. Many immigrant families are caught between the need to preserve Persian and their distrust of institutions that are official, or tied to the Islamic Republic. Not everyone has access to a Persian school, and some parents refuse to let their child's language lessons come bundled with religious instruction, ideological content or the state's official narrative of Iran's history and identity.
So the question is not only how Persian should be taught. It is who teaches it, with what content, and with which image of Iran.
A few hours of weekend class will not carry a language on their own. A language survives when a child has reasons to use it: books and media made for her age, friendships with other Persian speakers, and the ability to talk in Persian not only about home and food, but about her own world.
For part of the second generation, Persian is still the language of home but no longer the language of life. For the third, the question is more fundamental: will Persian remain the language of home at all?
That question is not only about the survival of a language. Its answer will decide how directly generations who may never live in Iran can reach their family's memory, their people's modern history and the Iranian experience itself; whether Iran, for them, will be a land whose language they know, or a story that always arrives in translation.
