Sources of nutrition information and nutritional knowledge among school-going adolescents in Bangladesh

•Family members were the most popular (52.4%) source among school adolescents.•Nearly half of the participants (48.1%) scored low on basic nutritional knowledge assessment.•Majority (48.9%) of participants believe family members as accurate source.•Only 12.4% of participants treat online resources as accurate and it was the least used source.•Students used family members and online resources were less likely to obtain low score.