English Studies Institute-Esi is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Language Instruction & Schools
• School Business & Vocational

North American Industry Classification System (NAICS) Categories:

• Other Technical And Trade Schools > Schools, Vocational, Business
• Language Schools > Schools & Educational Services, Language

Standard Industry Classification (SIC) Categories:

• Vocational Schools, Nec > Schools, Vocational, Business
• Schools And Educational Services, Nec > Schools & Educational Services, Language