Background: Individual characteristics such as awareness, perspective, and routines significantly influence one's oral health. This survey explored the Saudi school children's knowledge, attitude and behaviors related to oral hygiene in the Al Qassim province. Materials and Methods: A cross sectional study using a pretested online questionnaire was conducted among school children in the Al Qassim region. The first section of the questionnaire recorded students' age and dental history, and experiences were recorded.The second part covered dental hygiene and dental visits. In the third part, students' oral hygiene knowledge was tested. Results: Oral hygiene knowledge was found to be good in 39% of the students, whereas it was found to be significantly higher in those students who brushed frequently or twice a day (p<0.001). About 56.8% of the students reported having some dental problems, and 20.7% mentioned they had never been to the dentist in their lives.Students over the age of 12 years had a significantly higher frequency of dental visits last year (p=0.010). Conclusion: Schools in Saudi Arabia need to begin implementing a comprehensive oral health education program that targets not only the students but also their parents.