Insights

Established Market Player Rennert International has been operational since 1973, establishing a longstanding presence in the education administration industry with a focus on language instruction, translation, and interpretation services, indicating stability and significant market experience.

Recognition and Awards The company has received multiple accolades in 2024, including awards from Rochester Institute of Technology, Columbia College, and Lander University, demonstrating a commitment to academic excellence and industry recognition that can appeal to institutions seeking reputable language programs.

Recent Acquisition In 2018, Rennert International was acquired by Berkeley Language Services, suggesting potential access points for collaboration, partnership, or expansion opportunities within a broader language education network.

Financial Stability With estimated revenues between $25 million to $50 million, Rennert is a financially stable entity, making it a viable partner for enterprise-level language training and corporate education initiatives.

Unique Positioning As a founding member of the International of Language Centres and a shortlisted candidate for industry awards, Rennert holds a reputable position that can be leveraged to offer premium language solutions and tailored corporate training programs.

Similar companies to Rennert International

Rennert International Tech Stack

Rennert International uses 8 technology products and services including Crazy Egg, Google Hosted Libraries, parallax.js, and more. Explore Rennert International's tech stack below.

Crazy Egg
Analytics
Google Hosted Libraries
Content Delivery Network
parallax.js
Javascript Libraries
Choices
Javascript Libraries
Microsoft ASP.NET
Web Frameworks
Plesk
Web Hosting
Nginx
Web Servers
Microsoft IIS
Web Servers

Media & News

Rennert International's Email Address Formats

Rennert International uses at least 1 format(s):

Rennert International Email Formats	Example	Percentage
FLast@rennert.com	JDoe@rennert.com	90%
FirstLast@rennert.com	JohnDoe@rennert.com	6%
LastF@rennert.com	DoeJ@rennert.com	2%
FirstMLast@rennert.com	JohnMDoe@rennert.com	2%

Frequently Asked Questions

Where is Rennert International's headquarters located?

Rennert International's main headquarters is located at 12 East 41st Street 5th Floor New York, New York 10017 United States. The company has employees across 3 continents, including North AmericaEuropeSouth America.

What is Rennert International's phone number?

You can contact Rennert International's main corporate office by phone at

+1-212-867-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Rennert International's official website and social media links?

Rennert International's official website is rennert.com and has social profiles on LinkedIn.

How much revenue does Rennert International generate?

As of February 2026, Rennert International's annual revenue is estimated to be $3M.

What is Rennert International's SIC code NAICS code?

Rennert International's SIC code is 8299 - Schools and Educational Services, Not Elsewhere Classified NAICS code is 92311 - Administration of Education Programs.

How many employees does Rennert International have currently?

As of February 2026, Rennert International has approximately 72 employees across 3 continents, including North AmericaEuropeSouth America. Key team members include Vice President Of Sales And Business Development: D. H.President: C. R.Executive Assistant To The President: G. H.. Explore Rennert International's employee directory with LeadIQ.

What industry does Rennert International belong to?

Rennert International operates in the Education Administration Programs industry.

What technology does Rennert International use?

Rennert International's tech stack includes Crazy EggGoogle Hosted Librariesparallax.jsChoicesMicrosoft ASP.NETPleskNginxMicrosoft IIS.

What is Rennert International's email format?

Rennert International's email format typically follows the pattern of FLast@rennert.com. Find more Rennert International email formats with LeadIQ.

When was Rennert International founded?

Rennert International was founded in 1973.

Rennert International

Q: What is Rennert International's official website and social media links?

Rennert International's official website is rennert.com. Rennert International has social profiles on LinkedIn.

Q: How many employees does Rennert International have currently?

Rennert International has approximately 72 employees.

Q: What technology does Rennert International use?

Rennert International's tech stack includes reCAPTCHA, parallax.js, Windows Server, Bootstrap, WordPress.

Education Administration ProgramsNew York, United States51-200 Employees

Founded in 1973 by Cesar Rennert, Rennert International is a privately-owned language education and communications company that serves the world.

Our specialties include translation and interpretation services, English and international language instruction, Teen language programs, and ESOL teaching training.

Based in New York, Rennert International is based in Berkeley College, Midtown Manhattan, the heart of NYC

Rennert is a founding member of the International of Language Centres (IALC), an association of language schools that administers strict quality and ethical controls. We have been shortlisted for Study Travel Magazine's Star Awards, North American English school category, for six years.

Company Overview

Headquarters: 12 East 41st Street 5th Floor New York, New York 10017 United States
Phone number: +1-212-867-****
Website: rennert.com
SIC Code: 8299 - Schools and Educational Services, Not Elsewhere Classified
NAICS Code: 92311 - Administration of Education Programs
Founded: 1973
Employees: 51-200