Purpose: The present research was conducted with the aim of 
investigating the factors affecting the internationalization of 
higher education in Iran, with an emphasis on the language of 
science education in the university.
Materials and Methods: Therefore, the fitting of the model 
derived from the grand theory method was done using a 
quantitative method and a survey.
Findings: In this model, 12 main factors were discovered in 
the following order: identification and the main phenomenon 
of the model, the pluralism of the language of science 
education is a way for rise and promotion: the causal factors 
of the model include the need for promotion and educational 
and research productivity, the need for economic productivity, 
the need To promote scientific interactions, and the need to 
promote cultural interactions. The contextual factors of the 
model to the two big challenges of international escapism and 
language education; And international antagonism and 
cultural fear are divided. Intervening factors are also in the two 
areas of policies and laws; and the social and cultural sphere 
are related. Effective strategies for pluralizing the language of 
science education in Iran, two strategies at the level of the 
government and policymakers; And the university level 
strategy and social factors were discovered. The consequences 
of multiple languages in science education are divided into two 
parts: positive and negative consequences, and the positive 
consequences are divided into two parts: social, economic, and 
scientific growth; And the divided cultural growth and the 
negative consequences of those possible scientific and cultural 
damages were found. At the end, the model derived from 
grounded theory was implemented with a researcher-made 
questionnaire in two selected comprehensive universities.
Conclusion: In the quantitative analysis, the fit of the model 
was confirmed by the method of exploratory and confirmatory 
factor analysis and then the structural equations resulting from 
the answers of 306 faculty members to the researcher-made 
questionnaire