Background socioenvironmental stimuli. Providing them with healthy nutrition may not only compensate their deficiencies but also ensure better learning performance .

 Materials and methods students residing in district 19 of Tehran was assessed. Data were obtained by face-to-face interview .

 Results However, most of the subjects (45.7%) had bread, cheese and tea for the breakfast, while 42% had milk. Biscuit and cookies were the most commonly used allowed between-meals (47.8%) followed by fruit and fruit juice (38.9%). Totally, 14.2% of studied subjects took disallowed foods . Unfortunately, dried fruits were the least commonly used between-meals in our study .

 Conclusion students. Our

 Results have revealed that students should always be encouraged to have breakfast and appropriate between-meals and avoid disallowed foods in schools .