Where each fact comes from and how it is checked

Where the facts come from

We read each provider’s own website, or the municipality’s page for a municipal course, and note what it says it offers children: ages, the weekly timetable, prices and the period they cover, languages, trial lessons and whether a parent has to stay.

Addresses, map positions and opening hours may also come from the provider’s Google Maps listing. For a club, membership of a sports federation may come from the member list the federation publishes.

Each fact is stored with the address of its page, the date we read it and a short quote in the language of that page. Directories, news articles, course marketplaces, social networks and reviews are never used as sources.

Source flags

Every source carries one of three flags: published by the place (the provider’s own website, or the municipality’s page for its own courses), Google listing (its Google Maps entry) or federation list (a sports federation’s list of member clubs).

On a provider page each fact shows its flag and reading date, so you can see where it comes from and how recent it is.

Facts that are not published

When the pages we read do not give a fact, the provider page marks it as not published and the table shows a dash. “Not published” describes our sources and says nothing about the provider.

Missing facts are not guessed. A school grade, such as the first year of primary school (ilkokul), or a birth-year group is not turned into an age. A price keeps the period the provider states; the only calculation is the ≈ price per lesson, a course or package price divided by its lessons.

Class times and opening hours

Times are split into two columns. Class times: the days and hours of a class, a care session or a holiday programme day, as the provider states them. Opening hours: when the building is open, often taken from the Google listing.

A centre can be open at an hour when no group for a given age meets. A row with opening hours and nothing else goes below the dividing line, under a heading that says so.

The after-school pages look at weekdays from 15:30 to 18:30, once a full school day has ended. A class counts when one of its groups starts inside that span; after-school care counts when its hours, extended hours included, cover the whole span.

What this catalogue does not judge

No provider, teacher, coach or programme gets a rating, score or rank.
Nobody visits providers to inspect them; each fact comes from a published source.
Nobody grades how well children are taught, coached or cared for.
Free places in a group are not tracked; ask the provider.
Prices are shown as published, with their period and date, and are not confirmed with the provider.

Corrections from providers

If you run a listed provider and a fact is wrong, missing or out of date, send a correction through the correction form with a link to the page that shows the right fact.

A correction that the provider’s own pages support goes into the next update and is logged in the list of changes. A provider that has closed keeps its page, marked as closed, and leaves every table.

A provider may also ask to be removed: choose “Ask to remove a listed provider” in the correction form and give a contact that shows you run it. The provider, its page and its records in the data files are deleted within one month.

Dates and updates

Each provider’s sources are read again within 6 months of the last reading. A price published for a period that has ended stays on the provider page with that period, while the filters and the summary line leave it out.

How the catalogue is funded

No provider pays to be listed, and no payment changes a row or its position.

A provider page may carry one link to Zartrace, a service connected with this catalogue and marked as such. Clicks on contact buttons are counted only as totals, with no personal data.

Open data

The whole catalogue can be downloaded as JSON, one record per provider, or as CSV, one row per offer. Both files include every source, flag and date, and name their licence.

Districts, distance and the map

Areas are Istanbul’s semts, the neighbourhoods parents name, on the European and Asian sides; each semt is made of whole mahalleler, the official address units, and stays inside one district (ilçe). The outlying towns of Çatalca, Silivri and Şile, the Princes’ Islands (Adalar) and Gebze, Darıca and Çayırova across the Kocaeli border are areas of their own. A branch is filed under the area whose boundary contains it.

Distance is measured in a straight line from the point you pick to the nearest branch and rounded to half a kilometre, so it does not count the way round by a Bosphorus bridge or ferry. Your location is requested only when you press the button and stays in your browser.