GENEVA, April 23 (Xinhua) -- Despite massive international funding over the past seven years, millions of children and youth in Syria still face the risk of dropping out schools as the conditions there deteriorate, the UNICEF warned on Monday.

UNICEF called for "continued, flexible, unconditional" support for children and youth to engage in quality learning in the war-torn country.

Against all odds, some 4.9 million Syrian children continue to have access to education despite more than seven long years of war, violence and displacement, according to UNICEF.

"Massive funding from donors, unprecedented generosity from host governments and communities; relentless work from heroic teachers and the determination of Syrian children and their families have helped millions of Syrian children get an education," said Geert Cappelaere, UNICEF regional director for the Middle East and North Africa.

Nearly 90 percent of children who have access to education are in public schools, both in Syria and in neighboring countries. In Lebanon and Jordan, Syrian children have been able to join their local peers in public schools.

"The Syria crisis has created an opportunity for neighboring countries to improve public education infrastructure, create new employment possibilities for education staff and build tolerance between host communities and Syrian refugees," Cappelaere added.

However, huge challenges remain. The seven-year long conflict has caused 2.8 million children to miss out on their education. Some of these children have never been to school, while others have missed out on up to seven years of learning, making it extremely difficult for them to catch up.

UNICEF warned that in parts of Syria, going to school has at times become a matter of life and death because of violence and attacks. Since the conflict began in 2011, 309 education facilities came under attack and one in three schools can no longer be used because they were destroyed, damaged, used for military purposes or for hosting displaced families.

According to UNICEF, nearly 40 percent of children who are out of school are between 15 and 17 years old, making them prey to exploitation including early marriage, recruitment into the fighting and child labor.

These problems are becoming more prevalent as families increasingly resort to extreme survival measures. For those children who are in school, the risk of dropping out looms as they increasingly face the impacts of trauma.

Meanwhile, in neighboring countries, host governments are overwhelmed by nearly two million additional school children to absorb in local education systems amid an unstable economic situation. Refugee families' dwindling financial resources, poor and unavailable infrastructure, lack of sufficient learning space and language barriers are reducing children's participation in effective learning.

"As world leaders meet in Brussels this week for the Conference on Supporting the Future of Syria and the Region, we appeal to them not to give up on children and youth that have already been through so much," said Cappelaere.

"Continued, flexible, unconditional and long-term funding to the education sector is needed to improve existing systems and scale up alternative options for children and youth to engage in quality learning ...The protection and needs of children should be the priority for decision makers and those fighting on the ground."