How is an average calculated?
We add the eligible values for a detail and divide by the number of offers contributing that detail. Each detail has its own count, so a job with a missing value does not contribute to that particular average.
Do zero amounts count?
Yes. An explicit ₩0 means that benefit is not offered. It is a real part of the offer, not missing data. For example, housing allowances of ₩500,000, ₩500,000, and ₩0 average about ₩333,333. This describes all eligible offers, not just those providing an allowance. We do not draw an arbitrary minimum line at ₩1 or ₩50,000.
Which offers are included?
We use benchmark-approved jobs published within the last 12 months. Filled, cancelled, and expired jobs can still contribute during that window. Drafts, suspended jobs, and jobs awaiting benchmark review or excluded from benchmarks do not contribute. Republishing a job does not create an extra contribution.
Are part-time and full-time salaries compared together?
Pay comparisons use scheduled weekly hours: under 10, 10 to under 20, 20 to under 30, 30 to 40, and over 40. Hours come from the job's daily start and finish times. Missing or invalid schedules cannot provide a reliable pay comparison. Other details, such as housing and vacation days, use the overall eligible-offer average rather than these hours groups.
How is hourly pay estimated?
Monthly salary is divided by estimated monthly scheduled hours: weekly scheduled hours × 52 ÷ 12. This uses the full scheduled working time, including preparation time, rather than teaching hours alone.
Can one employer dominate an average?
Each employer can contribute at most three jobs to each detail's average. Newer published jobs take priority. This limit applies separately to each detail.
What happens to unusual values?
Suspicious values are held out of benchmarks for review. A job may remain visible while it is excluded from the averages. Correcting or reviewing an offer can change its eligibility; being in an average is not a guarantee that every claim in the listing has been independently verified.
Does this represent every job in Korea?
No. These are averages of eligible offers on ESL Whitelist Korea, not a census of the entire market. An average can appear with just one contributing offer, so a small sample may move noticeably when another offer is added. Use it as context alongside the actual schedule, benefits, location, and contract terms.