The UEFA European Under-19 Championship consists of three distinct stages: the qualifying round, the elite round and the final tournament.
The qualifying round, played in autumn, is made up of 13 groups of four teams playing in one-venue mini-tournaments. The top two from each progress alongside the third-placed team with the best record against the top pair in their group.
In the elite round, played in the spring, those 27 qualifiers join the top seed, given a bye, in seven mini-tournament groups of four. The group winners then join the hosts in the finals.
The seven qualifiers plus the hosts are split into two groups of four who play each other once, with the top two progressing to the semi-finals. The winners of those ties contest the final.
Further details, including the criteria for separating teams that finish level on points in a group, or after extra time in a match, can be found in the official competition regulations.
A busy summer of UEFA national team tournaments kicks off next week with the U17 EUROs for men and women, the first of six events featuring 31 of UEFA's 55 member associations, including the U21 EURO and UEFA Women's EURO 2017.
England have booked places at all six tournaments and Germany could yet match them (as Women's U19 qualification is still in progress). Meanwhile, the Faroe Islands will be competing in their first ever final tournament after their men's U17 side grabbed a spot in Croatia.
When is each tournament and who is involved?
UEFA European Women's Under-17 Championship (Czech Republic)
2–14 May, follow @UEFAWomensEURO/#WU17EURO
Czech Republic (hosts), England, France, Germany (holders), Netherlands, Norway, Republic of Ireland, Spain
UEFA European Under-17 Championship (Croatia)
3–19 May, follow @UEFAcom/#U17EURO
Bosnia and Herzegovina, Croatia (hosts), England, Faroe Islands, France, Germany, Hungary, Italy, Netherlands, Norway, Republic of Ireland, Scotland, Serbia, Spain, Turkey, Ukraine
UEFA European Under-21 Championship (Poland)
16–30 June, follow @UEFAUnder21/#U21EURO
Czech Republic, Denmark, England, Germany, Italy, FYR Macedonia, Poland (hosts), Portugal, Serbia, Slovakia, Spain, Sweden (holders)
UEFA European Under-19 Championship (Georgia)
2–15 July, follow @UEFAcom/#U19EURO
Bulgaria, Czech Republic, England, Georgia (hosts), Germany, Netherlands, Portugal, Sweden
UEFA Women's EURO 2017 (Netherlands)
16 July–6 August, follow @UEFAWomensEURO/#WEURO2017
Austria, Belgium, Denmark, England, France, Germany (holders), Iceland, Italy, Netherlands (hosts), Norway, Portugal, Russia, Scotland, Spain, Sweden, Switzerland
UEFA European Women's Under-19 Championship (Northern Ireland)
8–20 August, follow @UEFAWomensEURO/#WU19EURO
England, Italy, Netherlands, Northern Ireland (hosts), Scotland + 3 tbc
Who is in how many tournaments? (max: 6)
England (WU17, U17, U21, U19, WEURO, WU19)
Germany (WU17, U17, U21, U19, WEURO)*
Netherlands (WU17, U17, U19, WEURO, WU19)
Italy (U17, U21, WEURO, WU19)
Spain (WU17, U17, U21, WEURO)*
Czech Republic (WU17, U21, U19)
France (WU17, U17, WEURO)*
Norway (WU17, U17, WEURO)
Portugal (U21, U19, WEURO)
Scotland (U17, WEURO, WU19)
Sweden (U21, U19, WEURO)
Denmark (U21, WEURO)
Republic of Ireland (WU17, U17)
Serbia (U17, U21)
Bosnia and Herzegovina (U17)
Faroe Islands (U17)
FYR Macedonia (U21)
Northern Ireland (WU19)
*Could still qualify for WU19: Belgium, France (holders), Germany, Hungary, Iceland, Poland, Russia, Spain, Switzerland
Key: WEURO=UEFA Women's EURO, U21=UEFA European Under-21 Championship, U19=UEFA European Under-19 Championship, U17=UEFA European Under-17 Championship, WU19=UEFA European Women's Under-19 Championship, WU17=UEFA European Women's Under-17 Championship
©UEFA.com 1998-2017. All rights reserved.