In the EU, there is no single student visa that applies to all countries. Each EU member state has its own rules and procedures for issuing student visas. Generally, students from non-EU countries who want to study in the EU will need to apply for a student visa from the country where they plan to study.

Proof of acceptance: Students will need to provide proof of acceptance into a program of study at an approved educational institution.
Financial support: Students will need to demonstrate that they have enough money to cover their living expenses while they are studying in the EU.
Health insurance: Students will need to have health insurance that is valid in the EU.
Language proficiency: Students will need to demonstrate that they have a sufficient level of proficiency in the language of instruction.

In the US, international students typically apply for a student visa, known as the F-1 student visa. The process of obtaining a student visa can take several months, so it is important to start the application process as early as possible.

Acceptance into an approved school: Students must have been accepted into an accredited school in the US and have a Form I-20 from the school.
Nonimmigrant intent: Students must demonstrate that they have nonimmigrant intent, which means that they plan to return to their home country after completing their studies.
Financial support: Students must demonstrate that they have enough money to cover their living expenses while they are studying in the US.
Interview: Students will be required to attend an interview at a US Embassy or Consulate, during which they will be asked to provide additional information and documentation.