This photo taken on September 14, 2017 shows students talking to each other during a class break at the Metropolitan 5th Elementary School in Mongolia's capital Ulaanbaatar. Mongolia's baby boom is pushing its schools to breaking point, with desperate parents of kindergarteners facing the stark choice of relying on a lottery system or paying for pricey private schools in Ulaanbaatar. / AFP PHOTO / BYAMBASUREN BYAMBA-OCHIR / TO GO WITH Mongolia-education-demographics,FOCUS by Khaliun Bayartsogt