SDA Language Institute logo
Korvia employer guide

Adult conversation and kindergarten institute

One SDA application, two very different teaching lives

SDA Language Institute — SDA삼육어학원, romanized Samyook — is a Seventh-day Adventist language-institute network in South Korea. It opened in 1969 and says it ran the first native-speaker English conversation classes in the country. The same brand today runs adult conversation branches — some starting before dawn, one not until midday — and full-day Kinderest kindergarten centres. They are genuinely different jobs, they hire at the same time, and this one page covers both.

Since 1969Adult conversationKinderest kindergartenSeoul to Jeju

Research checked . Job terms can change.

A native English teacher reading with two students at an SDA Kinderest centre
1969Opened, and says it taught Korea’s first native-speaker classesSDA published history
Two tracksAdult conversation and Kinderest kindergartenOfficial SDA program pages
8 locationsAddresses SDA currently listsOfficial SDA branch pages
7Current Korvia openingsLive Korvia job data
Quick answer

If I apply to SDA once, how many jobs am I actually looking at?

More than most single-school applications. SDA currently lists five adult conversation branches, three junior programs at those same addresses, and four Kinderest kindergarten centres — eight distinct addresses, because the Dongdaemun head office also houses a Kinderest centre. On September 3, 2026, Korvia had a live opening at seven of those eight locations: Dongdaemun, Gangnam and Namyeong in Seoul, plus Incheon, Namyangju, Gwangju and Jeju. The one active location without a Korvia opening that day was Daejeon Dunsan.

The choice inside the brand

Same name, two different working weeks

Most brand pages describe one job. SDA runs two, and the difference is not cosmetic: the hours, the daily rhythm and the class sizes diverge sharply. Read both before you decide which openings to ask about.

Conversation branches

Adult and junior conversation

Short conversation classes for adults and school-age students, taught in split shifts — a block before the working day, then an evening block. This is the format SDA has run since 1969.

Weekly hours
28 in the Gangnam and Incheon listings; 40 at Namyeong
Teaching week
Monday to Thursday at Gangnam; Monday to Friday at Namyeong, with a short Friday at Incheon
Earliest class
06:30 at Gangnam and 07:00 at Namyeong in the current listings. Incheon has no dawn block at all — its earliest class is 11:00.
Class cap
Up to 8 at Gangnam, up to 10 at Incheon
Salary in listings
KRW 2.2M to 2.4M, with the Namyeong role open to negotiation above that

Gangnam and Namyeong in Seoul; Inha Univ. Station in Incheon.

Korvia job listings, checked September 3, 2026
Kinderest centres

Full-day kindergarten

Kinderest is SDA’s kindergarten brand for ages five to seven, pairing English with science, maths, art and creativity classes. A conventional daytime job rather than a split shift.

Weekly hours
40 in all four listings
Teaching week
Monday to Friday. 09:00–17:30 in the Seoul listing; 08:30–18:00 at the other three
Earliest class
No dawn block — the day starts with the children
Class cap
Up to 12 at Seoul and Namyangju, up to 15 at Gwangju and Jeju
Salary in listings
KRW 2.4M

Dongdaemun in Seoul, Namyangju, Gwangju and Jeju.

Korvia listings checked September 3, 2026, and official Kinderest program pages

Both tracks were hiring on the same day this guide was checked. Salary, hours, housing and assigned classes are set by the individual job listing and contract, not by the track — use this comparison to choose which openings to ask about, then read the job card.

Curriculum overview

What you may actually teach

SDA writes and publishes its own course materials and uses them across branches, so the teaching sequence is defined rather than improvised. Below is what the published program actually contains, including one course that teachers should know about before applying.

01
Adults

Conversation levels

Adult English conversation runs in one and two month terms in short class periods, across a published ladder of a beginner tier plus six numbered stages. SDA also lists TOEIC and business English options, and Japanese and Chinese conversation alongside English.

Official SDA adult program pages
02
Practice

The language lab

SDA pairs classroom time with a 30-minute online lab session before and after each class. It is presented as part of the standard course, not an add-on, so it shapes how a class period is prepared and followed up.

Official SDA adult program pages
03
Materials

A four-stage in-house series

The published progression runs Hi English, then You Too Can Speak English, then Target English, then Focus English, described as SDA’s own materials rather than a licensed series. Branch pages carry the same course description.

Official SDA curriculum pages
04
Kindergarten

Kinderest

A full-day program for ages five to seven, combining English with science, maths, art and creativity classes. SDA states that homeroom teachers are native or Korean depending on the year level, and that native teachers complete early-childhood and Korean-culture training before assignment.

Official Kinderest program page and FAQ
05
School age

Junior program

Junior English runs at the Seoul, Namyeong and Incheon addresses alongside the adult branches, with maths, semi-annual student presentations, and one-to-one phone English described as taught by native teachers.

Official SDA junior program pages
06
Know this first

English Religion class

SDA is a Seventh-day Adventist institute and religion is a timetabled course, not an extracurricular. Published branch timetables show an English Religion slot — annotated at one branch as a Bible class — assigned to named native teachers. None of the current Korvia listings states a religious requirement for the teacher, and whether an individual teacher can decline that class is not something we could establish from published sources. Ask the branch directly.

Official SDA branch timetables and tuition disclosure
Reading corner at an SDA Kinderest centre, lined with picture books
Official visualKinderest is SDA’s kindergarten brand for ages five to seven, taught alongside science, maths, art and creativity classes.
Work environment lens

What the role may feel like

SDA does not publish an employment handbook, so this section combines its own published timetables and teacher pages with the current Korvia job cards. Contract terms remain specific to the branch and the listing.

Some branches split your day in two

The Gangnam listing runs Monday to Thursday from early morning until mid-morning, then returns for an evening hour. That is two commutes and a long midday gap. Ask how the gap is treated before you accept, and note that the Incheon branch has no dawn block at all.

Korvia job listings, September 3, 2026

The Sabbath shapes the week

SDA is a Seventh-day Adventist institute, and the Adventist Sabbath runs from Friday evening to Saturday evening. None of the seven current listings includes Saturday teaching, and the Gangnam role runs Monday to Thursday only — though Incheon adds a short Friday afternoon and the Namyeong and Kinderest roles are Monday to Friday. Ask what applies at your branch and whether anything is expected of you on a Friday evening.

Korvia job listings, September 3, 2026

The native-teacher group is small and named

SDA publishes its adult teaching staff by branch. Across the five adult branches those pages listed 24 teachers, of whom 18 hold a nationality from the seven countries SDA says it recruits from, five are listed as Korean and one is unlisted. You would be joining a handful of colleagues per branch, not a large department.

Official SDA teacher pages, read September 3, 2026

Recruiting is central, the employer may be local

SDA states that it recruits native teachers directly through its own network from seven English-speaking countries, and that all branches are directly operated rather than franchised. Even so, the legal entity named on your contract will not necessarily be the head office, and the seven current openings differ enough from each other that the branch, not the brand, is what you are joining. Ask which entity you are signing with and who manages that branch day to day.

Official SDA statements and Korean business registry entries
Independent review context

Read the reviews yourself, and here is what we checked directly

Employee reviews of SDA are filed under the romanized name Samyook rather than SDA, which is why they are easy to miss — search that spelling and you will find a handful. Read them directly rather than any summary of them, including ours, and weigh a small number of entries for what they are. What we could check first-hand is more concrete, and it is unusual: SDA publishes its adult teaching staff branch by branch, none of the seven current openings includes Saturday teaching, and every one of them lists provided housing, a flight allowance and 11 to 13 days of paid vacation. The reviews and this guide agree on one point — a lot depends on which branch you join, which is why the questions below are branch-level rather than brand-level.

Public review search checked . Anonymous accounts are context, not verified facts about a current opening.

Questions worth taking into the interview

  • Is the English Religion class on my timetable, and what happens if I would rather not teach it?
  • How do the weekly hours in my contract map to the published class blocks?
  • Is the gap between the morning and evening blocks paid standby or my own time?
  • Which legal entity will my contract name, and who manages this branch day to day?
  • Can I speak privately with a current native teacher at this exact branch?
Teacher fit

A better match starts with honest tradeoffs

Brand pages describe a teaching model. Your contract defines the job. Use both before deciding.

Tell Korvia what you want

This could suit you if

  • You want to compare genuinely different teaching jobs without applying to a dozen separate schools.
  • A week with no Saturday teaching appeals to you.
  • You are comfortable working for a school with an openly religious identity and a religion class on the timetable.
  • You would consider a city outside the capital — Gwangju and Jeju hire alongside Seoul.
  • You prefer a defined, in-house curriculum and small classes over building your own materials.

Confirm before you accept

  • Is the English Religion class part of your assigned timetable, and can you decline it?
  • Which legal entity does your contract name? Branches share a brand but hold separate business registrations.
  • How do the weekly hours map to actual class blocks? The Gangnam role lists 28 hours against morning and evening blocks that add up to fewer — ask what the rest covers, and whether the midday gap is paid.
  • How is overtime recorded and paid, and what is the procedure for claiming it? Get that in writing rather than in conversation.
  • How many days off do you actually get per term, and who decides your branch assignment and when?
  • Is the inbound flight reimbursed, and on what terms? Get it in the contract rather than in conversation.
  • What exactly does the provided housing include — furnishings, internet and utilities?
  • How are severance and pension handled, and what does your contract say about each?
  • What is expected of you, if anything, on Friday evenings and Saturdays?
  • Can you speak privately with a current native teacher at that exact branch?
Location guide

Where SDA is hiring through Korvia

SDA currently lists five adult conversation branches, three junior programs at those same addresses, and four Kinderest kindergarten centres — eight addresses in all. Openings move with the hiring season, so treat the live cards below as the current answer.

Hiring footprint

Seoul, the capital region, and two locations well outside it

This schematic plots the SDA addresses reached by this guide. Most Korean hagwon brands concentrate in the Seoul–Gyeonggi corridor; the Kinderest centres in Gwangju and on Jeju are the reason this page is worth reading if you do not want the capital.

  1. SeoulDongdaemun · Gangnam · Namyeong
  2. Incheon · NamyangjuInha Univ. Station · Byeollae
  3. DaejeonListed by SDA, no opening today
  4. GwangjuKinderest centre
  5. JejuKinderest centre
Schematic · not to scale
This schematic is a location guide and is not drawn to scale.

Place names are normalised from SDA’s published branch pages and Korvia’s employer records. Other academies trade under the SDA name without appearing on the official site, so read this as the currently published network rather than a complete count. The active job listing and contract state the exact workplace address.

Live opportunities

Current SDA Language Institute jobs through Korvia

These cards are drawn from Korvia’s live job data rather than a fixed table, so they change as roles fill. Every one of the current openings lists provided housing, a flight allowance and paid vacation. Open each card for its branch, start date, age group and full terms.

Current Korvia opening

SDA Language Institute Namyeong Campus in Seoul — March 2027

Seoul

Salary
2.2M KRW ~ negotiable
Work schedule
M-F, 7AM-12PM / 3PM-7PM / 7PM-9PM
Teaching load
40 hrs
Age groups
Secondary, Adult
Housing
Single Studio
Review the full job details
Current Korvia opening

SDA Language Institute Gangnam Branch in Seoul — March 2027

Seoul

Salary
2.2M KRW ~ 2.4M KRW
Work schedule
M-Thu, 6:30AM-10:30AM, 7PM-8PM
Teaching load
28 hrs
Age groups
Adult
Class cap
Up to 8 students
Housing
Apartment
Review the full job details
Current Korvia opening

SDA Language Institute in Seoul — March 2027

Seoul

Salary
2.4M KRW
Work schedule
M-F,9AM-5:30PM
Teaching load
40 hrs
Age groups
Kindergarten
Class cap
Up to 12 students
Housing
Single Studio
Review the full job details
Current Korvia opening

SDA Kinderest Language Institute Jeju Campus in Jeju-do — March 2027

Jeju-do

Salary
2.4M KRW
Work schedule
M-F, 8:30AM-6PM (with some days ending at 5PM)
Teaching load
40 hrs
Age groups
Kindergarten
Class cap
Up to 15 students
Housing
Dormitory (each room equipped with a private living space and bathroom, while the hallway is shared among residents)
Review the full job details
Current Korvia opening

SDA Language Institute Kinderest Byulnae in Gyeonggi — March 2027

Gyeonggi

Salary
2.4M KRW
Work schedule
M-F, 8:30AM-6PM (with some days ending at 5PM)
Teaching load
40 hrs
Age groups
Kindergarten
Class cap
Up to 12 students
Housing
Dormitory
Review the full job details
Current Korvia opening

SDA Language Institue Inha Univ. Station center in Incheon — January 2027

Incheon

Salary
2.2M KRW ~ 2.4M KRW
Work schedule
M-TH, 11AM-12PM, 3PM-9:40PM / F, 3PM-4:30PM
Teaching load
28 hrs
Age groups
Primary, Secondary, Adult
Class cap
Up to 10 students
Housing
Officetel
Review the full job details
Current Korvia opening

SDA Kinderest Language Institute Gwangju Campus in Jeollanam-do — March 2027

Jeollanam-do

Salary
2.4M KRW
Work schedule
M-F, 8:30AM-6PM (with some days ending at 5PM)
Teaching load
40 hrs
Age groups
Kindergarten
Class cap
Up to 15 students
Housing
Single Studio
Review the full job details

Only the linked job listing and signed contract define salary, hours, housing, benefits and assigned classes.

Straight answers

Questions teachers ask

Short answers based on the listed sources and Korvia's current employer records.

How many SDA locations hire through Korvia?

Seven of the eight addresses SDA lists had a Korvia opening on September 3, 2026 — every location except Daejeon Dunsan. Because openings move with the hiring season, the job cards above are the live answer; this page recounts them on every rebuild rather than quoting a fixed number.

How can I check an SDA branch is a properly registered academy?

Korean academies are listed in the national education-office registry, which shows each branch’s registration number, opening date and approved student capacity. Look up the exact branch named in your contract rather than the brand — SDA branches are registered individually, and the registry is the cheapest way to confirm the place you are being hired into actually exists on paper.

Can I see who I would be working with before I apply?

Unusually for a Korean academy, yes. SDA publishes its adult teaching staff branch by branch on its own site, with nationality and the university each teacher graduated from. It is a small group — a handful per branch — so you can see the size and make-up of the team you would join.

What is the difference between SDA and Kinderest?

Kinderest is SDA’s kindergarten brand for ages five to seven, running full days Monday to Friday with class caps of 12 to 15. The SDA conversation branches teach adults and school-age students in blocks spread across the day, 28 to 40 hours a week, with caps of 8 to 10. Same brand, very different working day.

Do SDA teachers really start at six in the morning?

At some branches, yes, and it varies by location rather than applying across the brand. Of the current openings, the Gangnam role starts at 06:30 and the Namyeong role at 07:00, while the Incheon role has no dawn block at all — its earliest class is 11:00. The Kinderest kindergarten roles start with the children in the morning. Check the timetable for the specific branch in your offer.

Is SDA a religious school, and would I have to teach religion?

Yes, and religion is timetabled rather than extracurricular. SDA is affiliated with the Seventh-day Adventist church, and published branch timetables show an English Religion class — described at one branch as a Bible class — assigned to named native teachers. Whether a teacher can decline it is not established in any published source, so ask before you accept.

Do SDA branches teach on Fridays and Saturdays?

None of the seven current openings includes Saturday teaching, which is consistent with the Adventist Sabbath running from Friday evening to Saturday evening. Fridays differ by branch: the Gangnam role is Monday to Thursday, the Incheon role adds a short Friday afternoon, and the Namyeong and Kinderest roles run Monday to Friday. Confirm the pattern for your branch, and ask whether anything is expected of you on a Friday evening.

Where are SDA teaching jobs located?

Three locations in Seoul — Dongdaemun, Gangnam and Namyeong in Yongsan — plus Incheon near Inha University station, Byeollae in Namyangju, Gwangju, Jeju, and Daejeon Dunsan. The Gwangju and Jeju Kinderest centres are the main reason this brand is worth a look if you would rather not live in the capital region.

What should I confirm before accepting an SDA offer?

Look up the employee reviews filed under the name Samyook — there are only a handful, so read them rather than a summary. Then confirm the religion class, the contracting entity, how weekly hours map to real class blocks, and flight and housing terms in writing. Best of all, ask to speak with a current teacher at that branch.

Research notes

Sources behind this guide

We distinguish employer-provided or public-source information from job-specific Korvia data so you can check the evidence yourself.

  1. Official schoolSDA Language Institute homepage
  2. Official programSDA adult conversation program and levels
  3. Official programKinderest kindergarten program and hiring FAQ
  4. Official branchSDA Seoul head office branch page and term calendar
  5. Official branchSDA Gangnam branch page and timetable
  6. Live job dataKorvia teaching jobs in Korea
Find the school that fits your teaching style

Compare the curriculum. Ask the practical questions. Apply with context.

Apply with Korvia Explore employer guides