International students

Definition

“Internationally mobile students are individuals who have physically crossed an international border between two countries with the objective to participate in educational activities in the country of destination, where the country of destination of a given student is different from their country of origin” (UNESCO Institute of Statistics, n.d.).

There are many overlapping definitions of “international students.” Since 2015, UIS (UNESCO Institute of Statistics), OECD (Organisation for Economic Co-operation and Development) and EUROSTAT (the European Union’s statistical office), have agreed upon the above definition of “internationally mobile students.”

This definition captures the most important group of international students: those who moved to a foreign country for educational purposes (UNESCO, n.d.). This definition also focuses on students who are enrolled for a tertiary (or higher) degree; therefore the length of stay is typically more than one year, and up to 7 years.

Internationally mobile students are different from two other common definitions of international students, namely “foreign students” and “credit-mobile students.”

• Foreign students - refers to non-citizens who are currently enrolled in higher education degree courses. This definition does not distinguish between students holding non-resident visas and those with permanent resident status. The former usually arrive and stay independently, while the latter usually migrate because their parents moved, making them 1.5-generation immigrants.
  
   
• Credit-mobile students - refers to “study-abroad” or exchange students, such as those in the EU’s Erasmus programme. These students remain enrolled in their home countries while receiving a small number of credits from foreign institutions (Van Mol and Ekamper, 2016). Due to their fluid enrolment status, most statistics on international students do not include credit-mobile students.

While the agreed-upon definition of internationally mobile students has been used since 2015, data on international students reflect the long-standing differences between the three definitions.

Data sources

UNESCO’s Institute for Statistics (UIS) provides the most comprehensive data to date on on international students by country of destination and origin (called “inbound” and “outbound” respectively) for more than 100 countries. Countries, by responding to an annual UIS questionnaire, report the number of internationally mobile students they are hosting and information on the students’ countries of origin. Annual data for several countries are available from 1998 to 2021.

OECD provides the total number of international students from various countries of origin who are enrolled in OECD countries of destination. An older indicator in OECD's archived database has data from 1998 to 2012. Between 2003 and 2012, the reported number were further disaggregated into “non-citizen” students and “non-resident” students. The latter category aligns more closely with UIS’s definition of internationally mobile students. A newer indicator provides data on the enrolment of international students from 2013 to 2021 in OECD countries and four non-OECD countries of destination. Both of these indicators are further disaggregated by sex and level of education.

Project Atlas - While UIS and the OECD rely on reports from destination countries, Project Atlas partners with 26 country-specific data providers to obtain data on inbound and outbound flows of international students. With the annual coverage depending on the country, data availability is generally from 2013 to 2012. It is important to note that the number reported by Project Atlas includes exchange and study-abroad students, and as such, the number is likely higher than those reported by UIS or OECD.

Prominent destination countries that host a large share of international students, such as the United States, are increasingly better at maintaining data on international students. These data could provide further breakdowns of international students by sex or age. Such data might be requested from relevant statistical agencies. The United States, for instance, maintains the Student and Exchange Visitor Program (SEVP) database which contains detailed records of international student visas from 2001 to present.

Many studies of international students rely on surveys of potential students to understand their motivations for studying overseas (e.g., Mazzarol and Soutar, 2002), and surveys of current international students to examine their intentions to stay or to leave after graduation (e.g. Han et al., 2015). These surveys typically lack a sampling frame, and therefore could not be treated as representative samples.  

Data strengths & limitations