How each fact is found, dated and checked

Where the facts come from

We read each organiser’s own website and note what it says it offers children: ages, the weekly timetable, prices and the period each covers, languages, trial lessons and whether a parent has to stay.

Addresses, map points and opening hours may also come from the organiser’s Google Maps listing. For a sports club, membership of a national sports federation may come from the club register that federation publishes.

Each fact is stored with the address of its page, the day it was read and a short quotation in the language of that page. Catalogues, news articles, booking portals, social networks and reviews are never used as sources.

Source flags

Each source carries one of three flags: published by the organiser (its own website), Google listing (its entry on Google Maps) or federation register (a sports federation’s list of member clubs).

On an organiser’s page the flag and the day of reading stand beside each fact, so you can see where it comes from and how recent it is.

Facts not published

When the pages we read leave a fact out, the organiser’s page marks it as not published and the table shows a dash. “Not published” is about our sources and says nothing about the organiser.

A missing fact is never guessed. A school year (such as the first stage of primary school) or a birth-year squad is not turned into an age. A price keeps the period the organiser names; the one sum we work out is the ≈ price of a lesson, a course or half-year price divided by its lessons.

Group times and opening hours

Times appear in two columns. Group times: the days and hours of a club, a care session or a camp day, as the organiser gives them. Opening hours: when the building is open, often taken from the Google listing.

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

The after-school pages look at weekdays from 14:00 to 18:00, once younger pupils have left their lessons and lunch behind. A club counts when one of its groups starts within that span; after-school care counts when its hours, extended hours included, cover the span in full.

What the listing does not judge

No organiser, teacher, coach or programme gets a rating, a score or a rank.
No one visits the organisers; every fact is read from a published source.
No one assesses how well a club is taught, a team is trained or children are cared for.
Free places in a group are not tracked here; the organiser can tell you.
Prices appear as published, with their period and date, and are not confirmed with the organiser.

Corrections from organisers

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

A correction backed by the organiser’s own pages goes into the next update and is written into the dated changes. An organiser that has stopped running keeps its page, marked as closed, and leaves every table.

An organiser can also ask to be taken off: pick “Ask to remove a listed organiser” in the form and leave a contact that shows you run it. The organiser, its page and its records in the data files go within a month.

Dates and updates

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

How the listing is paid for

Organisers do not pay to be listed, and no payment changes a row or where it stands in the table.

An organiser’s page may carry one link to Zartrace, a service linked with this listing and marked as such. Clicks on the contact buttons are counted only as totals, with no personal data.

Open data

The whole listing can be downloaded as JSON, one record per organiser, or as CSV, one row per programme. Both files carry every source, flag and date and name their licence.

Neighbourhoods, distances and the map

The areas are Prague’s neighbourhoods as parents name them, each made of whole cadastral areas (katastrální území), with a small one counted together with the neighbour it is named with, and the towns just outside the city. A branch is filed under the neighbourhood or town within whose boundary it stands; a district number such as Praha followed by its number is not used, because it is a postal and town-hall division.

Distance runs in a straight line from the point you choose to the nearest branch and is rounded to half a kilometre. Your location is asked for only when you press the button, and it never leaves your browser.