> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/naics/611691/ # NAICS code 611691: Exam Preparation and Tutoring The organizations classified under NAICS 611691, where they are based, how big they are and how the code maps to SIC. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** NAICS 611691 is the code for Exam Preparation and Tutoring, in sector 61: Educational Services. The organizations counted under it are mostly very small: 67% have 50 or fewer employees, and 98% are headquartered in the United States. ## What is NAICS 611691? NAICS 611691 is the code for Exam Preparation and Tutoring. It belongs to sector 61: Educational Services. NAICS, the North American Industry Classification System, is the standard U.S. government agencies use to sort businesses by what they mainly do, and each digit narrows the category. Most of the organizations counted also carry SIC 8299, School and educational services, in the older SIC system (99%). - 67% of the organizations counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (98%). Within the US, California is the biggest state (15%). - Most were founded in the 2000s (42%), then the 2010s (41%). **Figure: How NAICS 611691 is built.** The code 611691 split into its parts: sector 61, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 611691. Each digit narrows the category.* ## Which organizations are classified under NAICS 611691? The biggest by headcount range include Think Together, Tutorme, The Academic Advantage, Collaborative For Educational Services and Compass Education Group. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Think Together | Santa Ana, CA | 1,001 to 5,000 | | Tutorme | Los Angeles, CA | 501 to 1,000 | | The Academic Advantage | Los Angeles, CA | 501 to 1,000 | | Collaborative For Educational Services | Northampton, MA | 201 to 500 | | Compass Education Group | Beverly Hills, CA | 201 to 500 | | Kara Tutoring | Houston, TX | 201 to 500 | | Accelerate Learning | Houston, TX | 51 to 200 | | Shmoop | Scottsdale, AZ | 51 to 200 | | Truelearn | Charlotte, NC | 51 to 200 | | Lumen Learning | Portland, OR | 51 to 200 | | Revolution Prep | Culver City, CA | 51 to 200 | | Englishhelper | New Delhi, India | 51 to 200 | | Synergis Education | Mesa, AZ | 51 to 200 | | Greenwich Education Group | Stamford, CT | 51 to 200 | | Happy Numbers | San Francisco, CA | 51 to 200 | | Axiom Learning | Cambridge, MA | 51 to 200 | | Maxscholar | Aventura, FL | 51 to 200 | | Nao Now | Dallas, TX | 51 to 200 | | College Prep 360 | New York, United States | 51 to 200 | | Study Edge | Gainesville, FL | 51 to 200 | | Tutoreye | Poway Poway, United States | 51 to 200 | | Myguru | Chicago, IL | 51 to 200 | | Signet Education | Cambridge, MA | 51 to 200 | | New Mind Education | Raleigh, NC | 51 to 200 | | Beacon College | Hong Kong, Hong Kong | 51 to 200 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are NAICS 611691 organizations based? Within the United States, California (15%), New York (15%) and Texas (12%) lead. **Figure: US headquarters of organizations in NAICS 611691, by state.** A tile map of the United States shaded by the share of counted US organizations in NAICS 611691 headquartered in each state. The largest are California 15%, New York 15%, Texas 12%. *Share of counted US organizations in NAICS 611691 by headquarters state. The three largest states are outlined.* ## How big are the organizations counted for NAICS 611691? 67% of them have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of organizations in NAICS 611691.** Seven columns for the share of counted organizations in NAICS 611691 in each employee range: 11 to 50 67%, 51 to 200 28%, 201 to 500 2%, 501 to 1,000 1%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted organizations in NAICS 611691 in each employee range.* ## How old are NAICS 611691 organizations? Most were founded in the 2000s (42%), then the 2010s (41%). **Figure: When organizations in NAICS 611691 were founded.** Eight columns for the share of counted organizations in NAICS 611691 founded in each era: Before 1960 0%, 1960s 2%, 1970s 3%, 1980s 2%, 1990s 7%, 2000s 42%, 2010s 41%, 2020s 4%. *Share of counted organizations in NAICS 611691 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 611691 compares - 44% were founded in 2010 or later, against 30% across all NAICS codes on this site. - New York holds 15% of the US companies here, against 6% across all NAICS codes on this site. ## How do NAICS 611691 organizations describe themselves? A code is assigned by classification, and a company does not choose its own, so the label a company uses for itself can differ. The most common labels here are Education Administration Programs (35%), E-Learning Providers (17%) and Education (9%). **Figure: How organizations in NAICS 611691 describe themselves.** Bars for the share of counted organizations in NAICS 611691 that give each industry on their public profile: Education Administration Programs 35%, E-Learning Providers 17%, Education 9%, Primary and Secondary Education 9%, E-learning 7%, Education Management 7%. *Share of counted organizations in NAICS 611691 by the industry they list on their public profile.* ## NAICS 611691 and the SIC system NAICS replaced SIC in 1997, but the two do not line up one to one: companies filed under one NAICS code can carry several SIC codes. These are the ones seen most. | Code | Title | Share of counted | | --- | --- | --- | | SIC 8299 | School and educational services | 99% | ## Where NAICS codes come from NAICS is maintained by the U.S. Census Bureau with Canada and Mexico and revised every five years; the current edition is NAICS 2022. To check exactly what a code includes, search the [official NAICS index](https://www.census.gov/naics/) or read the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html). Pick a code by what a company mostly does, not by who it sells to. ## How do you reach the people at NAICS 611691 organizations? The people to talk to are usually administration, IT and finance leaders. You can build the list from this code in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with NAICS code 611691 (Exam Preparation and Tutoring) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the administration, IT and finance leaders at companies with NAICS code 611691, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Codes next to it: [NAICS 611620: Sports and Recreation Instruction](https://enrich.chat/naics/611620/)[NAICS 611692: Automobile Driving Schools](https://enrich.chat/naics/611692/) Others in sector 61: [NAICS 611110: Elementary and Secondary Schools](https://enrich.chat/naics/611110/)[NAICS 611310: Colleges, Universities, and Professional](https://enrich.chat/naics/611310/)[NAICS 611210: Junior Colleges](https://enrich.chat/naics/611210/) ## Frequently asked questions ### What is NAICS code 611691? NAICS 611691 is the code for Exam Preparation and Tutoring, in sector 61: Educational Services. ### What is the SIC code for NAICS 611691 (Exam Preparation and Tutoring)? 99% of the organizations counted carry SIC 8299 (School and educational services), but the two systems do not map one to one. ### Which organizations are classified under NAICS 611691? The biggest by headcount range include Think Together, Tutorme, The Academic Advantage, Collaborative For Educational Services and Compass Education Group. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 611691 organizations based? The largest groups are headquartered in the United States (98%). ### How big are the organizations in NAICS 611691? 67% have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### How do I find a company's NAICS code? Search the official NAICS index at the U.S. Census Bureau for the code that matches what the company mostly does. Public companies in the US also list a SIC code in their SEC EDGAR profile. ## Try this prompt Find the people at NAICS 611691 organizations ```text Use www.enrich.chat to find the administration, IT and finance leaders at companies with NAICS code 611691, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 611620](https://enrich.chat/naics/611620/) - [NAICS 611692](https://enrich.chat/naics/611692/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)