Converse International School of Languages

What Converse International School of Languages does

Converse International School of Languages (CISL) is a privately held, California-incorporated LLC that has operated as an English-as-a-Second-Language (ESL) school since 1972. Its core operations are anchored at a single adult campus at 636 Broadway in downtown San Diego, supplemented by seasonal Junior Programs run on venue partnerships with at least eight U.S. university campuses, including Georgetown, UC Berkeley, Pepperdine, the University of San Diego, Yale, Barnard College, and Loyola Marymount University. The school markets an average class size of seven adult students (maximum eight) and fourteen junior students (maximum twelve), positioning small-cohort instruction as its primary differentiator.

The product portfolio is broad and segmented by learner objective. Adult tracks include Standard English, Intensive English, IELTS Preparation, Business English, Career English (with internship placement), Academic Pathways, Academic Year Abroad, English for Academic Purposes (EAP), Premier Executive English, Private Lessons, and English Plus Leisure. Junior Programs comprise summer English camps, homestay options in San Diego, Academic Youth Camps, and Group Study Tours. CISL also offers CISL Online Courses for remote learners. The underlying technology is human-delivered language instruction built on a communication-based methodology, refined over more than 50 years; the company operates no public API, no mobile app, and discloses no AI-driven features.

CISL's business model is direct-to-consumer tuition-based, with prices provided only via quote request rather than published on the website. Ancillary monetization includes a $160 registration fee, a $250 accommodation deposit, and unit-priced airport transfers of $100–$120. Distribution is entirely direct (website, phone, email, and quote request forms); no channel partners or resellers are used. CISL is accredited by the Commission on English Language Accreditation (CEA), licensed by the California Bureau for Private Postsecondary Education (BPPE), and certified as a Cambridge Testing Centre for CAE and FCE. Marketing relies on content (blog, social media across Facebook, Instagram, YouTube, and Korean platform Naver), and email newsletters. The customer base is a long tail of individual international students and a smaller segment of business professionals, with no enterprise contracts or named B2B logos in the disclosed record.

Name

Converse International School of Languages

Legal name

Converse International School of Languages LLC

Website

https://cisl.edu

Company type

Private

Founded year

1972

Operating status

Operating

Headcount range

1–10 employees

Short description

Converse International School of Languages (CISL) is a privately held San Diego-based ESL school, founded in 1972, offering adult English programs at its downtown campus and junior summer camps at partner U.S. universities, serving international students and professionals worldwide.

Ownership category

akta.pro rank

Product category

Language Education Services

NAICS

Language Schools (611630)

SIC

Services-Educational Services (8200)

akta.pro primary industry

General ESL Programs (Multi-level Adult ESL) (EDAAACAA)

akta.pro secondary industries

Integrated Language + Academic Skills (EAP) Bridging Programs (EDAIAJAF), English Learner (EL/ESL/ELL) & Bilingual Education Programs (EDAJAGAB)

Keywords

• English language instruction
• ESL courses
• Language school programs
• IELTS exam preparation
• Junior English camps

Headquarters

HQ city

San Diego

HQ country

United States

HQ region

North America

Offices10 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure, Others

Revenue model

1. Tuition and Course Fees: Primary revenue from English language course tuition for adult and junior programs including Standard English, Intensive English, Business English, IELTS Preparation, Career English, Academic Pathways, and Premier Executive programs.
2. Accommodation Services: Revenue from homestay accommodations and university dormitory placements for students.
3. Ancillary Services: Airport transfer services ($100-$120), registration fees ($160), and accommodation deposits ($250).

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

CISL provides English as a Second Language (ESL) instruction for international adult students (ages 18+) and junior/teen students (ages 13-17) at its San Diego headquarters and at summer camp locations on prestigious U.S. university campuses. Adult programs include Standard English, Intensive English, IELTS Preparation, Business English, Career English, Academic Pathways, Academic Year Abroad, EAP, Premier Executive English, and Private Lessons. Junior offerings consist of residential summer English camps and homestay programs. Courses are delivered in small classes (average 7 adult students, 14 junior students) with a communication-based teaching methodology.

Product overview

CISL (Converse International School of Languages) is a language training institution established in 1972, offering a comprehensive portfolio of English as a Second Language (ESL) programs. The school operates primarily from a San Diego, California campus and provides adult programs including Standard English, Intensive English, IELTS Preparation, Business English, Career English, Academic Pathways, Academic Year Abroad, Academic English (EAP), Premier Executive English, and Private Lessons. Additionally, CISL offers Junior Programs comprising residential English camps at prestigious university campuses (Georgetown, UC Berkeley, Pepperdine Los Angeles, University of San Diego, New York City) and homestay options in San Diego. The school also provides online courses and Group Study Tours. All programs feature small class sizes with an average of 7 students per adult class and emphasize communication-focused, immersive language learning combined with cultural exposure.

Differentiator

Problem solved

Functional benefit

Products and services

• Standard English Foundational ESL course for international adult students focusing on grammar, comprehension, speaking, vocabulary, and fluency development.
• Intensive English Accelerated ESL program for adult international students with extended classroom hours for faster language progress.
• IELTS Preparation Exam preparation course designed to help students achieve high scores on the International English Language Testing System (IELTS) examination.
• Business English Professional English course focused on workplace communication, business vocabulary, and corporate language skills for adult learners.
• Private Lessons One-on-one customized English instruction tailored to individual learning goals and schedules for adult learners.
• Career English Professional development course combining English training with career-focused content and workplace internship opportunities for adult learners.
• Academic Pathways University preparation program helping international students transition to degree programs at U.S. educational institutions.
• Academic Year Abroad Extended immersive English program for adult international students planning extended study in the United States.
• Academic English (EAP) English for Academic Purposes course focusing on university-level reading, writing, research, and presentation skills for adult learners.
• Premier Executive English High-end executive-level English instruction for senior professionals and corporate clients, delivered in San Diego.
• Junior Programs (English Camps) Residential and homestay English immersion programs for teenagers (ages 13-17) held at university campuses across the USA including New York City, Georgetown, UC Berkeley, Pepperdine Los Angeles, University of San Diego, and San Diego Homestay locations.
• Academic Youth Camps Summer academic programs for younger students combining English instruction with specialized subject learning.
• Group Study Tours Customized English programs for school groups and organizations visiting from abroad.
• CISL Online Courses Remote English language instruction for adults and juniors unable to attend in-person classes.

Quantifiable outcome

• Average 7 students per adult class - providing more speaking time and individual attention

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• University Campuses (Georgetown, UC Berkeley, Pepperdine, University of San Diego, Yale, Barnard, Loyola Marymount)coreOthersCISL operates summer English camps at prestigious U.S. university campuses including Georgetown University (Washington D.C.), UC Berkeley, Pepperdine University (Los Angeles), University of San Diego, Yale University, Barnard College (New York), and Loyola Marymount University (Los Angeles). Students live and study on these campuses during summer programs.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• EF Education First: Largest global language school chain with US adult and junior programs (EF New York, EF San Diego) and similar academic pathway offerings; vastly larger scale and broader multi-language portfolio but overlapping customer base with CISL.

Direct peers

• EC English Language Schools: Global chain offering adult ESL, IELTS/Cambridge prep, and junior programs in US cities; very close product overlap with CISL across pricing tiers and student demographics.
• Summer Discovery: Pre-college summer program provider operating at multiple US university campuses (UCLA, Georgetown, Columbia, Penn) with English-plus enrichment for teen international students — same junior summer camp niche as CISL Junior Programs.
• ELS Educational Services: US-based ESL provider with multiple campuses and university pathway/conditional admission programs; very similar adult and junior programming structure and shares the international student / F-1 visa customer segment with CISL.
• Rennert International: NYC-based English language school offering Standard/Intensive English, Business English, and TESOL training with a similar small-class, communication-focused methodology.
• FLS International: US-based ESL chain with adult campuses (Las Vegas, Boston, etc.) and junior programs at US university campuses, closely mirroring CISL's two-tier adult + junior summer camp model.
• TALK English Schools: US-based chain of adult ESL schools (Miami, Orlando, Davie) with similar international student focus, F-1 visa pathways, and small-class instruction methodology.
• Kaplan International Languages: Operates adult ESL and junior English programs across multiple US cities (including San Diego and San Francisco) with similar tuition-based models, university pathway offerings, and Cambridge/IELTS exam prep — directly comparable in product and target customer to CISL.
• LAL Language Schools: Multi-city US language school (Boston, Fort Lauderdale, Miami, New York) offering adult ESL and summer junior programs at partner campuses with comparable tuition and program structure.

Regional players

• UC San Diego English Language Institute: San Diego-based English program at a local university targeting similar international student demographics; competes with CISL for the same San Diego ESL market with university brand association.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCBxiZ6o0CcPm_EUWYaKUMxw
• Facebookfacebook.com/ConverseInternationalSchoolofLanguages/?fref=ts
• Instagraminstagram.com/cisl_english
• LinkedInlinkedin.com/company/converse-international-school-of-languages

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Converse International School of Languages